By Les Christie, CNNMoney.com staff writer
Last Updated: April 29, 2009: 12:46 PM ET
NEW YORK (CNNMoney.com) --
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The organization rates communities on three criteria: ozone, short-term particle spikes and long-term particle averages. The ratings are based on statistics compiled for the years 2005 through 2007 at monitoring stations maintained by the U.S. Environmental Protection Agency. Los Angeles, Fresno and Bakersfield, all in California, had the dubious distinction of being in the top 10 list of all three categories.
The ALA found that the worst places to breathe are: Los Angeles, Bakersfield, Visalia, all in California, for ozone pollution; and Bakersfield, Pittsburgh and Visalia in terms of average particulates.
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Of the 25 cities with the worst ozone pollution problems, 16 recorded higher ozone levels in this year's report compared with last year. A dozen of the 25 cities with the worst average particle problem (microscopic soot, diesel exhaust, chemicals, metals and aerosols) experienced an uptick in those pollutants. Another four showed no change and nine improved. Thirteen cities recorded more days of severe spikes in particle pollution
Six of every 10 Americans - 186 million people - live in places where their lives are endangered by the air they breathe, according to Stephen Nolan, the American Lung Association National Board Chairman.
"Air pollution is a major threat to human health," he said in a prepared statement. "When 60% of Americans are left breathing air dirty enough to send people to the emergency room, to shape how kids' lungs develop and to kill, air pollution remains a serious problem."
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more:
http://money.cnn.com/2009/04/28/real_estate/most_polluted_cities/index.htm