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  4. St. Louis County

St. Louis County

Missouri

2026-08-23 11:00
CAQI (Europe)
Very Low
Pollutants|Pollens
PM10
μg/m³
21.1
PM2.5
μg/m³
6.9
O3
μg/m³
23.6
NO2
μg/m³
18.9
SO2
μg/m³
0.9
Weather
  • ℃
  • ℉
19℃
91%
3 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • CAQI (Europe)
  • Pollen
  • PM10
  • PM2.5
  • O3
  • NO2
  • SO2
Places included
Airport Township
AQI 23
Bonhomme Township
AQI 19
Chesterfield Township
AQI 19
Clayton Township
AQI 23
Concord Township
AQI 19
Creve Coeur Township
AQI 23
Ferguson Township
AQI 23
Gravois Township
AQI 21
Hadley Township
AQI 23
Jefferson Township
AQI 22
Lemay Township
AQI 19
Lewis and Clark Township
AQI 23
Maryland Heights Township
AQI 23
Meramec Township
AQI 19
Midland Township
AQI 23
Missouri River Township
AQI 21
Normandy Township
AQI 23
Northwest Township
AQI 23
Norwood Township
AQI 22
Oakville Township
AQI 19
Queeny Township
AQI 19
Spanish Lake Township
AQI 20
St. Ferdinand Township
AQI 20
Tesson Ferry Township
AQI 19
University Township
AQI 23
Wildhorse Township
AQI 19
Data Sources
http://www.airnow.gov/

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Cities Nearby

Huntleigh
AQI 19
Des Peres
AQI 19
Crystal Lake Park
AQI 19
Warson Woods
AQI 23
Rock Hill
AQI 23
Kirkwood
AQI 19
Frontenac
AQI 23
Glendale
AQI 19
Country Life Acres
AQI 19
Oakland
AQI 19
Westwood
AQI 23