50 cities with the worst air quality in the United States

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according to the American Lung Association, more than half of Americans (166 million people) live in places that are exposed to unhealthy particles and ozone pollution levels throughout the year. Every year, the association publishes an air condition report detailing pollution levels at official monitoring points. The best and worst cities in the United States are divided into three categories: Short-term particulate pollution, annual particulate pollution and ozone pollution. The acute effects of high ozone levels are usually reversible, and "prolonged exposure to particulate air" can exacerbate chronic diseases such as heart disease and diabetes. If you're curious about the air you breathe, here's a list of the 50 most polluted cities in Alabama throughout the year.

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50. Charleston, West Virginia is the capital of West Virginia, making it a commercial and cultural metropolis. All year round, Charleston holds autumn celebration, which is a city celebration of visual arts, music, dance, drama, etc. It includes more than 130 events and 360 performances. Unfortunately, Charleston's Huntington Ashland metropolitan area also has high concentrations of dangerous air pollutants because of its proximity to gas fields and industrial plants, according to West Virginia public radio. Deborah brown, President and CEO of the Central Atlantic American Lung Association, told the Charleston Gazette post that the region needed "stricter air quality standards" to continue to improve air quality.

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44. Rome, Georgia, is located on the seven foothills of the Appalachian Mountains, surrounded by three rivers that meet in the center of the city. The oak Mountain / masabari Museum illuminates the story of Appalachia, while the chieftain Museum provides a glimpse of Cherokee's history. The city is also home to Berry college, which ranks seventh among universities in the region, according to us news and world report. The coastal areas of Georgia benefit from the Atlantic currents that help purify the air. Unfortunately, Rome is only as far from the coast as Georgia. According to the Rome News Tribune, the growing population and traffic congestion have led to the deterioration of local air quality.

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44. Raleigh, North Carolina is the capital of North Carolina. It is named "Oak City" because it can beautify the city's oak trees. The capital hill of Raleigh Durham is known locally as the research triangle because the three cities have North Carolina State University, Duke University and North Carolina University respectively. The triangle is on Alabama's list because of the highest level of particulate pollution in the United States throughout the year. Tom Mather, spokesman for North Carolina's air quality department, told abc-11 that since the clean chimney act was passed in 2002, power plants have reduced their emissions by about 75%. Melissa Forde, head of ala, said there was still a long way to go in the region.

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44. Milwaukee is the largest city in Wisconsin, with 17 museums and 150 state and county parks. Every 11 days, it holds the world's largest music festival, the summer music festival. If that is not enough, visitors and locals can enjoy a wide range of cultural celebrations throughout the year, including Mexican, polish, Bastille, Indian summer, German and Irish. Milwaukee is 22300 miles from Lake Michigan. According to the Michigan Department of the environment, the study found that 31961 square miles of the Great Lakes region were contaminated with mercury from industrial factories. These emissions are not only in the water, but also in the air that locals and tourists have to breathe. Columbus, Ohio is the capital and largest city of Ohio, full of vitality and culture. It is ranked 32nd out of the 50 best cities in the United States by Bloomberg. It is the seat of Ohio State University, one of the top universities in the United States. Although Columbus found himself one of the 50 most polluted cities in the U.S. in the whole year, Shelly Kiser, advocacy director at ala, Ohio, said the standards of the federal Clean Air Act were working. " We have cleaned up the federal coal-fired power plant. We have turned to gas-fired power plants. We have moved forward to more renewable energy. We have cleaned up the diesel. She told the Columbus news agency. According to them, lawmakers in Ohio are currently opposing policies that help clean air, such as those that require more state energy from renewable sources and President Obama's clean energy plan. Chattanooga, Tennessee Wide bridges span the river from the central area. The city is home to Chattanooga Choo Choo, a museum of railway history and a museum of train models. The city's zero emission electric bus fleet provides transport for commuters and tourists, but it can be expanded to further improve air quality.

related: learn more about visiting Chattanooga, Tennessee.

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44. Atlanta, Georgia is the birthplace of Martin Luther King. Atlanta is a busy metropolis, full of skyscrapers. Its dome, the Georgia Capitol, was built in 1889. Its metropolitan area is the eighth largest economy in the United States and the seventeenth largest economy in the world. It is also the global headquarters of Coca Cola, UPS, home depot, at & T and Newell rubiermaid. No wonder pollution is a problem in such a densely populated area. Michael halicki, of clean air sports, advises Atlanta residents to "run in succession, not alone... Skip driving. "

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43. Baltimore, Maryland

Baltimore is located in the middle of Maryland, along the patapsco River and Chesapeake Bay. It is the location of a large seaport, with the beautiful inner harbor as its center. However, according to CBS Baltimore, the Washington Baltimore Arlington area "comes from power plants, animal waste and fertilizerAir pollution and runoff pollution that wash away the hard surface bring difficulties to the geographical environment. The metropolitan area should start from strengthening the emission regulations of power plants.

related: learn more about visiting Atlanta, Georgia.

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41. Youngstown, Ohio, is on the marshing River southeast of Cleveland. Originally a steel manufacturing center, Youngstown is now the only city in the United States where the population has fallen by more than 2% in recent years. Youngstown can reduce pollution by strengthening emission control, and Ohio is on the right track: the U.S. Environmental Defense Fund recently listed Ohio as a leader in reducing air emissions and creating jobs.

related: learn more about visiting Youngstown, Ohio.

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39. South Bend, Indiana is home to the famous University of Notre Dame. The campus is famous for the awe inspiring Cathedral of the holy heart. It has beautiful high ceilings and stained glass windows. Visitors can also read our lady Lourdes grottoes, a small replica of a French shrine where students light candles and pray. Despite improvements in other counties of Indiana, there has been an increase in Short-term particulate pollution in South Bend. According to a news release from ala, it also ranks higher on the annual list of particulate pollution than ever before. Tony ward and missoulan, chemistry professors in Missoula, Montana, say 55 to 80 percent of outdoor air pollution in Missoula comes from wood smoke. These sources include smoke from wood stoves, regulated combustion and forest fires, which are exacerbated by climate change, which leads to hotter and drier summers. " "Particles of this size can cause more than just coughing, bronchitis or lung cancer," Dr. Georgia Milano, former director of women's health at St Patrick's Hospital, told missoulian. They are absorbed by the blood, leading to heart attacks, strokes and immune system disorders. "Factors that contribute to improving air quality in Missoula include improving car engine emissions, reducing traffic flow and increasing use of wood stoves that burn detergents, according to Ben Schmidt, a Missoula County air quality expert.

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39. At the end of the 19th century, Captain William Harris hardy planned to build a railway from the meridian to New Orleans and from the Gulf coast to Jackson. At their crossroads, he built Hattiesburg, named after his wife. Today, the population of Hattiesburg is over 148000. The city's African American military history museum is the only joint World War II public service organization Club built for African Americans. Animal lovers can visit the hartsburg zoo, which has added more than 20 new facilities since 2010. One of the smaller communities on the Alabama list is terihote, Indiana, a quarter of this year's best Community Award competition in the United States, which supports community revitalization. Coca Cola bottle was invented there in 1915. It is the location of the first paid toilet in the world. According to wthr, the biggest source of air pollution in Indiana is power plants. " "In Indiana, we are being hit by gigawatts of coal-fired power, the largest source of pollution on earth," Valley watch founder John Blair told wthr. Coal fired power plants release arsenic, lead and mercury into the air, along with millions of pounds of carbon dioxide, nitrogen oxides and sulfur dioxide. Locals can use less electricity to burn less coal, and fewer cars to use less gasoline.

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36. San Diego, California < H3> < P > San Diego hills downtown with its "city meets nature" charming style down to the seaside boardwalk. The city extends north to the quaint surf town of Encinitas and south to the border with Mexico. According to Fox 5 news, climate change I is largely to blame. Long term drought and frequent heat waves in San Diego Carlsbad make air purification difficult. Debra Kelly of the American Lung Association suggested that San Diego "build more communities that encourage walking and cycling." More public transport will also help. "

related: learn more about visiting San Diego, California.

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36. New York, a sleepless city, is home to some of the most iconic landmarks in the United States. The statue of liberty, Ellis Island, Central Park, the Empire State Building, the Guggenheim Museum and the Metropolitan Museum of art are all iconic buildings of the big apple. The city is making significant progress in reducing pollution by enacting a number of municipal regulations. However, air quality in the New York Newark area can be further improved through large-scale environmental development programs, such as the recent Staten Island blue belt, an ecologically sound stormwater management program.

related: learn more about visiting New York, New York.

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33. Owensboro, Kentucky, according to its website, Owensboro is "the industrial, medical, retail and cultural center of Western Kentucky." It borders on the Ohio River, making smothers park a beautiful outdoor destination for tourists. Unfortunately, the Ohio River leads the nation in industrial pollution, according to messenger magazine. Although Owensboro has poor air quality in terms of particulate pollution throughout the year, it is actually on Alabama's "cleanest" list of Short-term particulate pollution categories. "If we can do more to save lives, we should and we can," Heather wehheim, Alabama's communications director, said in a press release. The Lung Association called on Kentucky's leaders to develop a strong strategy to implement a clean energy plan and restore our state's renewable energy and energy efficiency standards to reduce harmful emissions from power plants that can worsen climate change and immediately harm health. Adamweb / Istok / Getty Images. Dallas, Texas

Dallas has always been the center of the oil and cotton industry. The main road of Sany river is surrounded by the lush green park adjacent to the city center. You can enjoy the charming scenery of the city skyline in the river. Sadly, according to the Texas Tribune, the Dallas Fort Worth area "has had little success in improving air quality." By strengthening the regulation of coal-fired power plant emissions, the city can further reduce pollution.

related: learn more about visiting Dallas, Texas.

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33. Columbus, Georgia

Columbus developed along the chattahuki River, which spans 434 miles and extends to the border between Georgia and Florida. Both tourists and residents like the Riverwalk, a 15 mile trail along the river. For anyone who wants to take risks, the chatahuki river is also the longest city in the world to go boating. Although the Columbus oben opellica metropolitan area ranks poorly in the annual particulate pollution category, it has achieved Alabama's "a" level in terms of ozone pollution level. Medford, Oregon, is a good place for anyone who likes pears and trains. This is the birthplace of Harry and David. This gift basket company specializes in the production of luxurious funny pears. Visitors can also stop at Medford railway Park, a 49 acre former sewage treatment plant. It features Mini steam trains (you can take them for free), full-size cars and locomotives, and a working telegraph system. Wildfires are the main air pollutants in Medford granz pass, Oregon. The Climate Center found that in cities 50 to 100 miles from wildfires, air quality was five to 15 times worse than normal. According to them, in the summer of 2013, Douglas buildings and strong winds and fires made the air quality of Grant Park unfavorable for people to stay outdoors for 9 days.

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31. Kansas City, Missouri, is known as the city of fountains. Visitors can see more than 200 water features dotted the city. The J.C. Nichols Memorial Fountain was built in 1910 in Paris and was salvaged from a scrap yard. It has four riders who represent the world's four rivers. The Mayer seahorse fountain purchased in Venice, Italy in 1920 has three mythical seahorses. Unfortunately, Kansas City has high levels of sulfur dioxide. James Turner of Sierra Club told KCTV 5 that coal-fired plants are to blame for the high level of air pollution in Kansas City. According to krqe 13 news, 34 people were taken to hospital this year after a chemical leak from a distillery near Atchison released toxic clouds in the air. The wind helps to disperse the clouds.

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28. The red river separates the city of Shreveport from the city of bosiye, which is ranked 28th in the list of the most polluted cities in Alabama. Mary Lee orr, director of the Louisiana environmental action network, told the Shreveport Times that there are many factors that contribute to air pollution every day. These include "Calumet professional product emissions, hydraulic fracturing process after drilling oil and gas wells in the whole hainsville shale area, lignite mining and combustion in aep-swepco / cleco plant near Mansfield, paper mills and pulp mills such as international paper company, and even conventional open burning of hardwood and pine forest to control vegetation." Orr urges the community to be "aware and involved" in air quality control.

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28. Macon, Georgia, is just southeast of Atlanta. Macon is the only Native American house rebuilt in North America. William Butler Johnston, infamously known as the custodian of the federal Treasury, left behind a 18000 square foot Italian Renaissance mansion, Hay House, open to tourists. Like most parts of the country, the Macon Warner Robbins metropolitan area has improved air quality this year. June deen of the southeastern Lung Association told Georgia health news that the city can thank for improved transportation and power plant emissions. According to the Atlanta National Public Radio (wabe), the implementation of the "green" locomotive will use a diesel engine to run two trains, which will further develop in the direction of clean air. Jamie Smith Hopkins of the Evansville Center for public integrity in Indiana says there are seven coal-fired power plants within 30 miles of Evansville. " In 2014, the third largest source of toxic gas emissions from power plants, factories and other facilities came from more than 20000 EPA 100 compounds, she wrote in today magazine. Academics call these plants "super polluters." Mary B. Collins, a researcher at the school of environmental science and forestry at New York State University, found that low-income communities and people of color were disproportionately exposed to poor air quality caused by super polluters. Although Indiana is one of the largest coal-fired States, it has no renewable energy requirements or contingency plans for climate change. Phoenix, Arizona, like many of the cities on the list, is geographically harmful to the city's air quality. The Central Valley forms a concave area to capture pollutants. Although the city is surrounded by the natural beauty of the mountains and the blooming Passiflora, poor air quality prevents people from enjoying the magnificent scenery. At dusk, the Jolla trail on camel's back is a sparkling Valley on one side and the foothills of Scottsdale on the other - if you can see the past through the pollution. The city is now displaying a large sign over the highway that reads "high pollution advisory." "Carpooling - Taking the bus", but in order to improve the air quality, we must take more active measures. The mesas cotsdale area of Phoenix, Arizona, can improve air quality by further developing public transport to support its growing population.

related: learn more about visiting Phoenix, Arizona.

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26. TexasEl Paso, a state with rich cultural heritage, depicts the past political turmoil and transformation. According to the El Paso website, visitors can learn about the Native American culture at the Indian cultural center of Pueblo Tigua in islatasur, which celebrates more than 300 years of El Paso's tribal history. More than 80% of residents agree with Hispanics, and the city's poverty rate is 6% higher than the state average, according to environmental health news. The railways along the U.S. - Mexico border, El Paso International Airport, El Paso International Airport and the second largest military base of El Paso, bliss, all cause air pollution in the metropolitan area of Las Cruces - Las Cruces. According to abc-7, the name of the city's air quality manager was omitted from the article, saying officials currently have no plans to reduce emissions.

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25. Little Rock City, Arkansas is a midwestern town on the Arkansas River and the capital of Arkansas. There are plenty of trees and natural beauty: the edge of the city lies at the foot of the wahita mountains. Its state Capitol is a replica of the White House, built of Arkansas granite, with Tiffany chandeliers and a dome with a 24 carat gold-plated cupola. But investing in advertising to encourage commuting can reduce emissions and improve air quality.

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23. Huilin, West Virginia's grand Vue park is a beautiful destination for anyone who loves outdoor activities. If it's not enough, there's the central market, Eckhardt's house, good zoo, grave Creek mound, and so on. Particle levels have been rising every year since 2010, according to the Charleston Gazette post. "The reduction in ground level ozone and particulate matter nationwide can be attributed to efforts to reduce emissions, particularly nitrogen oxides," Fred Durham, director of the air quality department of the Department of environmental protection of the State Department, told the Gazette. Kevin steward, director of environmental health, mid Atlantic, American Lung Association, air quality standards need to be more stringent. A major problem in Fairbanks, Alaska, is pollution from burning wood - burning in furnaces and in backyard stoves. " Most people think Alaska is one of the last good places to get rid of urban pollution. But they didn't spend a winter in Fairbanks or nearby Arctic town, where the air quality index (November 2013) was twice that of Beijing. "For Beijing residents living in one of the coldest residential areas in the world, burning wood and coal is a hard habit to break, especially because they have limited access to natural gas. In November 2015, the region issued the first ban on burning. Environmental groups are now suing EPA for failing to change the name of the Fairbanks Polaris region from medium to severe. The Associated Press reported that the change would force the region to develop more stringent measures, "such as requiring power plants to place additional filters in chimneys." Old wood and coal stoves need to be demolished before houses can be sold. "

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22. Birmingham, Alabama, founded in 1871, is the center of rail transportation and mining. Little change: coal mining and manufacturing remain at the heart of the city's economy. Birmingham's picturesque skyline overlooks the Appalachian Mountains in the distance. Birmingham has more green space per capita than any other American city, 19 acres of railway parks, lakeside bike paths, sculpture gardens and fountains. This rich natural beauty should be preserved, and the city's active metropolitan planning agency is taking good measures to clean up the air in the Birmingham Hoover taladega area of Alabama by improving public transport, maintaining strict emission standards and promoting free riding.

related: learn more about visiting Birmingham, Alabama.

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21. Erie, Pennsylvania, is on Lake Erie (as you might have guessed), where industrial plants are the main cause of air pollution. For some time, the production of fuel coke made from coal has been a problem for Yili. Goerie.com explained that the EPA is suing Yili cola for its claim that "the company failed to repair the chemical benzene leak, and excessive exposure to benzene could lead to cancer." Kevin Stewart, Alabama's head of environmental health, told the Allegheny front that implementing interstate air pollution rules, an EPA standard designed to improve air quality, would help clean the air. " Once that happens, it will help us meet air quality standards and distribute the burden of meeting them more equitably according to the source, "he said. Detroit, Michigan, has 52 heavy industry bases in the town of lurihe, just outside Detroit, with a radius of three miles, Newsweek reported. The region has for years "failed to comply" with federal restrictions on sulphur dioxide. State officials completed a plan this year to reduce sulfur dioxide emissions by requiring four industrial operations in the Detroit area. James Clift, policy director of the Michigan Environment Commission, told Detroit News. If you consider the impact of pollution and public health and compare it with the cost of replacing these plants, we should not continue to operate these plants, which will be a simple answer. "

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16 of American / Adobe company. Johnston, Pennsylvania (also known as "flood city") is a canal port, railway center, steel-making center and coal mine. Visitors can visit Johnston incline, the steepest car incline in the world, which connects the city center and the highlands of Westmont. On a quiet day, visit the Johnston national flood memorial to commemorate the 2209 people who died when the South Falk dam broke in 1889. The city winds along the konema River, which explains why it has some of the country's worst particulate pollution of the year. Albert pre, Professor, Carnegie Mellon UniversitySTO) mapped the air pollution in Allegheny County, 70 miles west of Johnston, and found that the river valley area had the highest concentration of air pollution. " He told Pittsburgh NPR News Station wesa, "emissions may be trapped below." Lancaster, Pennsylvania

located in the central part of Pennsylvania, Lancaster is the oldest Amish settlement in the United States. Here, an Amish community is still thriving, relying on carriage and avoiding electricity. Perhaps non Amish residents can learn something from their neighbors' low-carbon footprints: "the air in Lancaster is still stinky," Lancaster online reports. Deb brown, chief executive of the American Lung Association of the mid Atlantic, suggested that to improve Lancaster's air quality, "we need to develop stricter pollutant health standards and clean up the sources of pollution in the York area to protect the health of our citizens.">Related information:

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16. Houston, Texas is the fourth largest city in the United States, after New York, Los Angeles and Chicago. The city is famous for the Sam Houston Memorial, which was built in memory of general Sam Houston, President of the Republic of Texas. With the rapid population growth, the city's green Houston initiative recommends carpooling, walking, cycling and the use of public transport to reduce carbon emissions.

related: learn more about visiting Houston, Texas.

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16. San Luis Obispo, California, is known as the happiest town in the United States on the Oprah Winfrey Show. San Luis Obispo is praised for its beautiful geographical location and leisurely culture. The central California coast is an unspoiled wine country, with vineyards still bordered by pastures, big city flavors mixed with simple pleasures, and you can't distinguish between billionaires and beach travelers, "kantnast travelers reports. According to the 2015 California progress in clean air report released by the California Association of air pollution control officials, although the state wide emissions of smog forming pollutants have decreased by more than 50% since 1990, the continuous drought is likely to make California's progress to the East. The association requires stricter federal standards.

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14. Altona, Pa. develops around the railway industry. As a result, many of its major attractions are proud of the Pennsylvania railway, including the world-famous Horseshoe Curve. Along the bottom of the Allegheny Mountains, this feat was accomplished by the hard work of about 450 workers. Visitors can also see the aptly named altuna curve baseball team's game at the people's gas field. Unfortunately, Alabama ranked 14th on the list of cities with the highest levels of particulate pollution throughout the year, and 39th on its list of Short-term particulate pollution. Cincinnati, Ohio, the hometown of the Cincinnati red people, the great American baseball field is a major attraction for locals and tourists. Visitors can also stop at the Cincinnati Zoo, where tickets are $16 for adults and $12 for children. Unfortunately, outdoor activities are not always an option for 213812 local people with asthma. The main factors include traffic emissions and topography. " Similar to California's Central Valley, high traffic in the Cincinnati area results in high levels of pollution, "247 Wall St. wrote. In addition, the city is located in a valley, like the mountains around the Central Valley, which helps to reduce emissions. "

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13. Indianapolis, Indiana is famous for sports events, such as the annual Indianapolis 500, the national highway Association (NHRA), the top ten football championships and NCAA Basketball Championships. Forbes listed the city as one of the best city centers in the United States, praising the fountain square area as "a growing Bohemian atmosphere that is an important part of the city's identity." Indianapolis's pollution problem is not surprising, because it is the center of manufacturing and industry, as well as the distribution center of companies such as target, FedEx Express, Amazon and CVs. The key to reducing particulate pollution in Indianapolis - Carmel - Muncy, Indiana is to pass laws on power plant pollution.

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12. Historically, Philadelphia played an important role in the American Revolution: in 1776, the founding fathers met in Philadelphia to sign the declaration of independence and the Constitution in 1787. The city has a long history and is full of trees. Fairmont park is the largest landscape city park in the world. Unfortunately, Philadelphia, reading and Camden, Pennsylvania, New Jersey, Delaware and Maryland have the worst air quality in the country. To improve air quality, Joyce EPPs of the Pennsylvania Environmental Protection Agency recommends "decommissioning, decommissioning, or shutting down certain coal-fired power plants."

related: learn more about visiting Philadelphia, Pennsylvania.

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11. Cleveland, Ohio the picturesque center of Cleveland is on Lake Erie in northern Ohio. The city is known for its rock and Roll Hall of fame and strong economy, thanks to a variety of industries including manufacturing, financial services, biomedicine and healthcare. All this has polluted the air in Cleveland, Akron and Canton, Ohio. "We want to keep the environment clean, but we enjoy modern amenities that can cause pollution, such as air emissions from power plants and cars, as well as hazardous waste such as residual paint and cleaning chemicals," the Ohio State Environmental Protection Agency said. Many coal-fired power plants in the area support economic development, and the state is currently considering how to reduce the number of coal-fired power plants. Emissions while maintaining profitability.

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Louisville, Kentucky is one of the oldest cities in the United States. It is located to the west of the Appalachian Mountains, adjacent to the Ohio river rapids falls. It is the headquarters of Derby, Kentucky Fried Chicken. The city has more than 120 parks and the largest urban forest in the country. About a third of the country's Bourbon is made in Louisville. Although the economic benefits of liquor are positive, the manufacturing industry levies taxes on the ecological environment of Kentucky and Louisville, Jefferson, Elizabethtown and Madison areas of Indiana. How does Louisville improve air quality? According to Louisville's messenger magazine, "Louisville needs a strong regulator to lead. However, whether there is one is still uncertain. Last year, Louisville Metro's air pollution control zone was hit by state and federal audits and found its air monitoring data to be untrustworthy. "

related: learn more about visiting Louisville, Kentucky.

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9. Harrisburg, Pennsylvania is the capital of Pennsylvania. Harrisburg is a manufacturing power. The city's steel, coal and food industries, as well as the nearby Hershey Chocolate manufacturing center, are booming. Harrisburg is famous for the Three Mile Island nuclear accident, the most serious nuclear disaster in the US nuclear history in 1979. The toxic problem continues because the city is often covered with brown smoke. "Most of the problems in the region are due to the high concentration of its freight operations, the presence of interstate 81 and Pennsylvania toll roads and the traffic they bring," said pennlive, a local news website. There is also a coal-fired power plant near York port, Yorkshire. Local experts also say the region has been severely affected by power plants in other regions. "It seems that regulating manufacturing is the key to improving air quality in Harrisburg, Pennsylvania, York and Lebanon.

related: learn more about visiting Harrisburg, PA.

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has miles of riverside trails, and Pittsburgh residents and tourists like to run and walk along the city's Allegheny and Monongahela rivers. The buildings meet in Point State Park, near the city center, a beautiful spot where high-rise lights are reflected on the water at sunset. Pennsylvania, Ohio, and Pittsburgh, Newcastle, and Wharton in West Virginia can thank for the high ranking of emissions on this list. According to the Pittsburgh NPR News Station wesa, "pollution from nearly 300 coal-fired power plants in 15 states and the District of Columbia" rolled into Pennsylvania. However, air quality is the best in the past 17 years, since the report was published. Paul billings, senior vice president of the national propaganda department, told wesa that this is due to the continuous improvement of "the use of public transport, the regulation of pollution industry and public awareness".

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7. San Francisco, California is the cultural and financial center of Northern California. It is famous for Devil Island, Golden Gate Bridge, koyta, fisherman's Wharf and painted girls. It is also known for its bohemian, provocative counterculture, with the Beatles and hippies thriving. Unfortunately, there are many mountains around San Francisco, which cause air pollution. San Francisco has been trying to make the air cleaner for more than 40 years, according to China Dialogue, even though it ranks at the top of Alabama's annual list of the most polluted cities by particulate matter. More recently, it has raised California's motor vehicle emission standards, adopted low emission fuel regulations, and implemented "measures to improve traffic flow" and "promoting carpooling and more public transport use," the publication wrote. In Modesto, California, despite Modesto's motto of "water, wealth, contentment and health," the location of the San Joaquin Valley poses a challenge to the environment, as pollutants remain in the surrounding mountains. While there are plenty of things to do in Modesto - golf courses, public parks, antique shopping malls and museums - the lack of clean air hinders these outdoor activities. Modesto also inspired the movie "American Graffiti" and hosted the annual "American Graffiti" auto show. However, due to the geographical and weather related challenges faced by the Modesto Merced region, there are few strategies to improve air quality. According to the Huffington Post, "air pollution officials say the technology does not exist to reduce pollution in the valley and make the area compliant, although the area is investing in research and subsidizing a new generation of battery powered leaf blowers and mowers."

related: learn more about visiting Modesto, California.

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5. El cisto, California

P.> El cordo inhabits just north of the US Mexico border. According to desert America, it is the largest city below sea level in the United States, with less than three inches of rainfall a year. It sticks to the temperature throughout the winter in the 1970s and 1980s, making it a great holiday destination. Sadly, the city's climate has exacerbated air quality problems. The city uses water or crushed asphalt to cover all dirt roads and farmland to prevent dust from flying, CNN financial reported. Traffic from Mexico also causes air pollution there. In addition, Mexico, its neighbor, has looser air quality laws than the United States, making El citoo vulnerable to any air pollution.

Credit: span> James Steidl / Adobe stock H3> 4. Los Angeles, California. The city of angels. Location of Hollywood, Avenue of fame and Universal Studios. The history of the city in the entertainment industry is well known. What many people don't know, however, is that Los Angeles embracedThere is a strong tram and public transport system. In the "American tram scandal", the city was cheated. In this scandal, a shell company composed of General Motors and Firestone tires, standard oil and other companies purchased the existing tram system for the benefit of converting them into bus operation. Presumably, these companies have predicted population growth and realized that if Los Angeles is still dependent on oil, it can make a lot of money on oil and tires - indeed. According to ABC News, the American Lung Association urged people living in Los Angeles's long beach area to reduce driving, electricity, wood and garbage to reduce pollution.

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Fresno, California

Fresno is known as the "asthma capital of California". Like Bakersfield and Modesto, the location of the city's Central Valley makes pollution a continuing problem. On the way to Yosemite, tourists often pass the city and enjoy the 4.5-acre historical forest underground gardens and other attractions that remind people of the catacombs. Although the natural beauty of Fresno Madeira is enhanced by its proximity to famous nature parks, air quality remains a threat. It seems that Fresno can do little to improve air quality unless the city is willing to pay in the dry months to promote car shares and ban the burning of cars.

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2. Visalia, California

is nicknamed "American salad bowl". There is a fertile agricultural Valley in the Visalia portville Hanford area of California. Agriculture is its main industry. Visit Visalia, the gateway to Sequoia and King's Canyon National Park, according to its travel website. This is an outdoor destination, attracting tourists for hiking, bicycles, rafts and snowshoes. Unfortunately, its bowl shaped terrain makes it a trap for air pollutants from agriculture, oil drilling and transportation on route 99 and Interstate 5, the Guardian reported. Bonnie Holmes Gen recently told Visalia times delta that the transport sector needs to "stay away from the internal combustion engine" to improve air quality there.

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1. Bakersfield, California, is located in the Central Valley of California, just south of the original Nevada mountains. The region contributes a lot to California's economy: it produces 76% of California's oil supply and a lot of agriculture. The Hart Memorial Park features a peacock family roaming through vibrant displays, with outdoor music events held four times a week. However, Bakersfield's location makes keeping the air free from pollution a challenge because its Valley "makes a bowl to catch air pollution," according to time magazine. According to a Sierra Club press release, Bakersfield could further improve air quality by reducing pollution and passing laws to prevent "a heavily polluting, publicly subsidised coal-fired fertilizer and chemical plant."

related: learn more about visiting Bakersfield, California.

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What do you think? Do you live in one of these cities? How do you stay active while avoiding poor air quality? What do you notice your city has done to improve the environment and what do you want them to do?

and make sure you look at 50 of the best air quality cities in the United States.

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50 cities with the best air quality

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