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  4. St. Clair County

St. Clair County

Illinois

2026-09-11 00:00
CAQI (Europe)
Very Low
Pollutants|Pollens
O3
μg/m³
51.4
PM10
μg/m³
16.3
PM2.5
μg/m³
3.7
Weather
  • ℃
  • ℉
23℃
96%
0 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • CAQI (Europe)
  • Pollen
  • O3
  • PM10
  • PM2.5
Places included
Belleville
AQI 21
Canteen Township
AQI 8
Caseyville Township
AQI 8
Centreville Township
AQI 21
East St. Louis Township
AQI 22
Fayetteville Township
AQI 8
Freeburg Township
AQI 8
Lebanon Township
AQI 25
Lenzburg Township
AQI 8
Marissa Township
AQI 8
Mascoutah Township
AQI 25
Millstadt Township
AQI 21
New Athens Township
AQI 8
O'Fallon Township
AQI 8
Shiloh Valley Township
AQI 6
Smithton Township
AQI 6
St. Clair Township
AQI 21
Stites Township
AQI 21
Sugar Loaf Township
AQI 13
Data Sources
http://www.airnow.gov/

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Cities Nearby

Smithton
AQI 6
New Athens
AQI 8
Fayetteville
AQI 8
Hecker
AQI 8
Belleville
AQI 21
Mascoutah
AQI 25
Lenzburg
AQI 8
Swansea
AQI 21
Millstadt
AQI 21
Saint Libory
AQI 8
Waterloo
AQI 9