Today's Air Quality-St. Louis, MO

Unhealthy for Sensitive Groups

Members of sensitive groups may experience health effects. The general public is not likely to be affected.

PM2.5 (Particulate matter less than 2.5 microns)

All Pollutants

PM2.5 (Particulate matter less than 2.5 microns)

Unhealthy for Sensitive Groups

64.52 µg/m3

CO (Carbon Monoxide)

Good

400 µg/m3

NO2 (Nitrogen Dioxide)

Good

18.48 µg/m3

O3 (Ozone)

Moderate

71.83 µg/m3

PM10 (Particulate matter less than 10 microns)

Moderate

84.31 µg/m3

SO2 (Sulfur Dioxide)

Good

10.78 µg/m3