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St. Clair County

Illinois

2026-08-15 03:00
AQI (China)
Lightly Polluted
Pollutants|Pollens
PM10
μg/m³
141.4
PM2.5
μg/m³
11.6
O3
μg/m³
21.4
Weather
  • ℃
  • ℉
26℃
94%
11 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • PM2.5
  • O3
Places included
Belleville
AQI 136
Canteen Township
AQI 31
Caseyville Township
AQI 31
Centreville Township
AQI 136
East St. Louis Township
AQI 136
Fayetteville Township
AQI 16
Freeburg Township
AQI 16
Lebanon Township
AQI 59
Lenzburg Township
AQI 16
Marissa Township
AQI 16
Mascoutah Township
AQI 60
Millstadt Township
AQI 136
New Athens Township
AQI 16
O'Fallon Township
AQI 31
Shiloh Valley Township
AQI 17
Smithton Township
AQI 17
St. Clair Township
AQI 136
Stites Township
AQI 136
Sugar Loaf Township
AQI 49
Data Sources
http://www.airnow.gov/

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Cities Nearby

Smithton
AQI 17
New Athens
AQI 16
Fayetteville
AQI 16
Hecker
AQI 16
Belleville
AQI 136
Mascoutah
AQI 66
Lenzburg
AQI 16
Swansea
AQI 136
Millstadt
AQI 136
Saint Libory
AQI 16
Waterloo
AQI 30