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  4. St. Clair County

St. Clair County

Illinois

2026-08-13 07:00
AQI (US)
Good
Pollutants|Pollens
PM10
μg/m³
53
PM2.5
μg/m³
8.3
O3
μg/m³
4.3
Weather
  • ℃
  • ℉
24℃
98%
7 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM10
  • PM2.5
  • O3
Places included
Belleville
AQI 55
Canteen Township
AQI 55
Caseyville Township
AQI 55
Centreville Township
AQI 55
East St. Louis Township
AQI 54
Fayetteville Township
AQI 30
Freeburg Township
AQI 30
Lebanon Township
AQI 53
Lenzburg Township
AQI 30
Marissa Township
AQI 30
Mascoutah Township
AQI 49
Millstadt Township
AQI 54
New Athens Township
AQI 30
O'Fallon Township
AQI 55
Shiloh Valley Township
AQI 55
Smithton Township
AQI 55
St. Clair Township
AQI 55
Stites Township
AQI 54
Sugar Loaf Township
AQI 47
Data Sources
http://www.airnow.gov/

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Cities Nearby

Smithton
AQI 55
New Athens
AQI 30
Fayetteville
AQI 30
Hecker
AQI 30
Belleville
AQI 55
Mascoutah
AQI 51
Lenzburg
AQI 30
Swansea
AQI 55
Millstadt
AQI 54
Saint Libory
AQI 30
Waterloo
AQI 16