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  4. St. Clair County

St. Clair County

Illinois

2026-06-15 14:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
77.1
PM10
μg/m³
28
PM2.5
μg/m³
3
Weather
  • ℃
  • ℉
22℃
58%
5 kph
7 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM10
  • PM2.5
Places included
Belleville
AQI 36
Canteen Township
AQI 19
Caseyville Township
AQI 19
Centreville Township
AQI 36
East St. Louis Township
AQI 36
Fayetteville Township
AQI 15
Freeburg Township
AQI 15
Lebanon Township
AQI 26
Lenzburg Township
AQI 15
Marissa Township
AQI 15
Mascoutah Township
AQI 26
Millstadt Township
AQI 36
New Athens Township
AQI 15
O'Fallon Township
AQI 19
Shiloh Valley Township
AQI 19
Smithton Township
AQI 19
St. Clair Township
AQI 36
Stites Township
AQI 36
Sugar Loaf Township
AQI 15
Data Sources
http://www.airnow.gov/

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Cities Nearby

Smithton
AQI 19
New Athens
AQI 15
Fayetteville
AQI 15
Hecker
AQI 15
Belleville
AQI 36
Mascoutah
AQI 26
Lenzburg
AQI 15
Swansea
AQI 36
Millstadt
AQI 36
Saint Libory
AQI 15
Waterloo
AQI 14