Today's Air Quality-St. Louis,MO,United States

Moderate

Air quality is acceptable;however,for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Primary Pollutant:

O3 (Ozone)

All Pollutants

O3 (Ozone)

Moderate

83.91 µg/m3

CO (Carbon Monoxide)

Good

290 µg/m3

NO2 (Nitrogen Dioxide)

Good

22.24 µg/m3

PM10 (Particulate matter less than 10 microns)

Good

21.64 µg/m3

PM2.5 (Particulate matter less than 2.5 microns)

Moderate

18.66 µg/m3

SO2 (Sulphur Dioxide)

Good

3.37 µg/m3