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  3. Missouri
  4. St. Louis County

St. Louis County

Missouri

2026-10-20 12:00
AQI (US)
Moderate
Pollutants|Pollens
PM2.5
μg/m³
10.7
NO2
μg/m³
58.5
PM10
μg/m³
24.3
O3
μg/m³
18.2
SO2
μg/m³
2.9
Weather
  • ℃
  • ℉
10℃
90%
5 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • NO2
  • PM10
  • O3
  • SO2
Places included
Airport Township
AQI 55
Bonhomme Township
AQI 53
Chesterfield Township
AQI 52
Clayton Township
AQI 55
Concord Township
AQI 53
Creve Coeur Township
AQI 55
Ferguson Township
AQI 55
Gravois Township
AQI 55
Hadley Township
AQI 55
Jefferson Township
AQI 55
Lemay Township
AQI 53
Lewis and Clark Township
AQI 55
Maryland Heights Township
AQI 55
Meramec Township
AQI 48
Midland Township
AQI 55
Missouri River Township
AQI 55
Normandy Township
AQI 55
Northwest Township
AQI 55
Norwood Township
AQI 56
Oakville Township
AQI 48
Queeny Township
AQI 48
Spanish Lake Township
AQI 53
St. Ferdinand Township
AQI 56
Tesson Ferry Township
AQI 48
University Township
AQI 55
Wildhorse Township
AQI 48
Data Sources
http://www.airnow.gov/

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Cities Nearby

Huntleigh
AQI 55
Des Peres
AQI 55
Crystal Lake Park
AQI 55
Warson Woods
AQI 55
Rock Hill
AQI 55
Kirkwood
AQI 55
Frontenac
AQI 55
Glendale
AQI 55
Country Life Acres
AQI 55
Oakland
AQI 55
Westwood
AQI 55