California leads the nation in air pollution

The American Lung Association 2010 State of the Air Report brings the unsettling news that despite major progress in improving air quality, California has some of the unhealthiest air in the nation.

For the top ten cities in the country with the worst air pollution, California cities have 8 out of 10 for ozone (including the top 6), 5 out of 10 for annual particle pollution, and 7 out of 10 for short-term particle pollution.


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