L.A. ranked worst in ozone pollution

The "State of the Air Report", released Wednesday, ranked Los Angeles worst in the nation in /*ozone pollution*/, or /*smog*/. However, Los Angeles did fare better in particle pollution. The city ranked third in short-term particle pollution and fourth in year-round particle pollution. Last year, Los Angeles ranked as the worst city in both categories.

The report ranks pollution levels in cities across the country based on air quality measurements reported by local and state agencies to the /*U.S. Environmental Protection Agency*/ from 2005 to 2007.

The report found that roughly 60 percent of Americans live with unhealthy air pollution levels.

Air pollution has been tied to lung cancer, premature death, coughing and heart attacks.

Along with Los Angeles, the report says New York and Washington, D.C. have improved their air quality in the last decade. Still, more than half of California's counties were given a failing grade in the annual report card.

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