According to American Lung Association’s recent report 2011 State of Air, over half the country’s population live in areas where air pollution levels are often dangerous to breathe. It’s time to check the World Health Organization’s rankings and find out America’s most polluted cities.
San Diego
Most American consider San Diego as a Southern California paradise. But the city’s air is still polluted because of heavy traffic. An American Lung Association study of air quality across the United States says San Diego’s air is getting steadily cleaner. The nation’s eighth largest city got a grade of F because the public is still exposed to significant amounts of pollution, especially during the summer.
Heavy traffic is one of factors causing air pollution in San Diego
Pittsburgh
Pittsburgh is the second-largest city in the US Commonwealth of Pennsylvania. During its industrial heyday, Pittsburgh was known as American Steel City. The whole city was an environmental disaster and the soot was visible on residents’ windows. Over the years, the city has changed from a city of steel workers to one of middle managers, so the air has improved. But air pollution is still major problem – thousands of children in the city suffer from asthma.
Pittsburgh
Hanford-Corcoran, California
Hanford-Corcoran, one of six cities in California, is also on the list of polluted cites with industry and traffic congestion. Its pollution score is 17.3.
Hanford-Corcoran, Calif.
Riverside-San Bernardino-Ontario, California
Last year, Riverside had 105 days of unhealthy ozone levels. This city not only has to deal with its own pollution but also takes the leftover pollution from L.A.
Air pollution in Riverside, California
Los Angeles
Air pollution is still a big problem in Los Angeles due to largely personal and commercial vehicles.
Fresno, California
Heavy traffic and industry is the reasons for air pollution problems throughout the city. More than 75,000 of the city’s 90,000 residents suffer from asthma.
Fresno
Bakersfield, California
Bakersfield landed on the top of the most polluted cities list
Related links:
Most Air-polluted Cities in America: Bakersfield is the dirtiest city
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