St. Louis among worst cities for ozone pollution, report finds ^36.4%

STLPR - By Sarah Fentem - 5/1/2026, 9:33 PM

Negativity Bias 38% - Post Hoc (False Cause) 19.4% - Availability Heuristic 17.2%

The St. Louis metropolitan area is among the 25 cities ranked worst for ozone air pollution, according to the latest “State of the Air” report released by the health advocacy group the American Lung Association. Ozone, a gas that occurs naturally in the upper atmosphere, is considered a pollutant at ground level. According to the report,... more