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  4. St. Clair County

St. Clair County

Illinois

2026-08-13 02:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
8.4
PM10
μg/m³
40.1
O3
μg/m³
60
Weather
  • ℃
  • ℉
24℃
97%
6 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • PM10
  • O3
Places included
Belleville
AQI 52
Canteen Township
AQI 52
Caseyville Township
AQI 52
Centreville Township
AQI 52
East St. Louis Township
AQI 52
Fayetteville Township
AQI 33
Freeburg Township
AQI 33
Lebanon Township
AQI 52
Lenzburg Township
AQI 33
Marissa Township
AQI 33
Mascoutah Township
AQI 49
Millstadt Township
AQI 47
New Athens Township
AQI 33
O'Fallon Township
AQI 52
Shiloh Valley Township
AQI 52
Smithton Township
AQI 52
St. Clair Township
AQI 52
Stites Township
AQI 61
Sugar Loaf Township
AQI 30
Data Sources
http://www.airnow.gov/

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Cities Nearby

Smithton
AQI 52
New Athens
AQI 33
Fayetteville
AQI 33
Hecker
AQI 33
Belleville
AQI 52
Mascoutah
AQI 50
Lenzburg
AQI 33
Swansea
AQI 52
Millstadt
AQI 47
Saint Libory
AQI 33
Waterloo
AQI 30