Air quality in St. Louis
41
Moderate
Air Quality Index
Sensitive groups may experience health effects. The general public is not likely to be affected.
▲
Pollutants
PM2.5
16.2 µg/m³
PM10
16.8 µg/m³
NO₂
17.3 µg/m³
O₃
100 µg/m³
SO₂
6.1 µg/m³
CO
236 µg/m³