Home > USA > Illinois > St. Clair County > O Fallon
Primary air pollutant in the O Fallon area:
OZONE - 54 Moderate
If you are unusually sensitive to particle pollution, consider reducing your activity level or shorten the amount of time you are active outdoors.
Other Pollutants:
PM2.5 - 28 Good
PM10 - 19 Good
Primary Pollutant: PM2.5 - 0 Good
Secondary Pollutant: OZONE - 0 Good
Primary Pollutant: PM2.5 - 0 Moderate
Secondary Pollutant: OZONE - 0 Good
Primary Pollutant: PM2.5 - 0 Moderate
Secondary Pollutant: OZONE - 0 Moderate