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  4. St. Clair County

St. Clair County

Illinois

2026-04-30 19:00
AQI (US)
Moderate
Pollutants|Pollens
O3
μg/m³
115.7
PM10
μg/m³
42.8
PM2.5
μg/m³
5
Weather
  • ℃
  • ℉
19℃
39%
13 kph
6 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM10
  • PM2.5
Places included
Belleville
AQI 52
Canteen Township
AQI 32
Caseyville Township
AQI 32
Centreville Township
AQI 52
East St. Louis Township
AQI 52
Fayetteville Township
AQI 19
Freeburg Township
AQI 19
Lebanon Township
AQI 49
Lenzburg Township
AQI 19
Marissa Township
AQI 19
Mascoutah Township
AQI 49
Millstadt Township
AQI 52
New Athens Township
AQI 19
O'Fallon Township
AQI 32
Shiloh Valley Township
AQI 32
Smithton Township
AQI 32
St. Clair Township
AQI 52
Stites Township
AQI 52
Sugar Loaf Township
AQI 33
Data Sources
http://www.airnow.gov/

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Cities Nearby

Smithton
AQI 32
New Athens
AQI 19
Fayetteville
AQI 19
Hecker
AQI 19
Belleville
AQI 52
Mascoutah
AQI 48
Lenzburg
AQI 19
Swansea
AQI 52
Millstadt
AQI 52
Saint Libory
AQI 19
Waterloo
AQI 33