ST. LOUIS, MO — The American Lung Association gives St. Louis City and County a poor grade when it comes to air quality.
St. Louis County received an 'F' for ozone and a 'C' for particle pollution. Results in the city of St. Louis were similar with a 'C' for ozone and an 'F' for particle pollution.
The cleanest city in the American Lung Association report is Anchorage. The most polluted, Los Angeles.