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Los Angeles is still the nation’s smoggiest city

Apr 28, 2010 3:00:00 AM - latimes.com
The metropolitan area averages more than 140 days a year with dangerous ozone.

Metropolitan Los Angeles, extending to Riverside and Long Beach, remains the smoggiest city in the United States, with an average of more than 140 days a year of dangerous ozone levels, the American Lung Assn. reported Wednesday in its annual assessment .

USA, California: (Latest Stories)