Today's Air Quality-St. Louis, MO

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:

PM2.5 (Particulate matter less than 2.5 microns)

All Pollutants

PM2.5 (Particulate matter less than 2.5 microns)

Moderate

19.5 µg/m3

CO (Carbon Monoxide)

Good

300 µg/m3

NO2 (Nitrogen Dioxide)

Good

33.63 µg/m3

O3 (Ozone)

Good

20.49 µg/m3

PM10 (Particulate matter less than 10 microns)

Good

24.89 µg/m3

SO2 (Sulfur Dioxide)

Good

1.91 µg/m3

Breathing

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