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  2. United States
  3. Missouri
  4. St. Louis County

St. Louis County

Missouri

2026-10-21 12:00
AQI (US)
Moderate
Pollutants|Pollens
PM2.5
μg/m³
14
PM10
μg/m³
31.5
NO2
μg/m³
52.8
SO2
μg/m³
6
O3
μg/m³
1.1
Weather
  • ℃
  • ℉
13℃
81%
0 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • PM10
  • NO2
  • SO2
  • O3
Places included
Airport Township
AQI 66
Bonhomme Township
AQI 59
Chesterfield Township
AQI 51
Clayton Township
AQI 66
Concord Township
AQI 57
Creve Coeur Township
AQI 66
Ferguson Township
AQI 69
Gravois Township
AQI 66
Hadley Township
AQI 66
Jefferson Township
AQI 66
Lemay Township
AQI 59
Lewis and Clark Township
AQI 66
Maryland Heights Township
AQI 66
Meramec Township
AQI 30
Midland Township
AQI 66
Missouri River Township
AQI 66
Normandy Township
AQI 68
Northwest Township
AQI 66
Norwood Township
AQI 63
Oakville Township
AQI 30
Queeny Township
AQI 30
Spanish Lake Township
AQI 57
St. Ferdinand Township
AQI 61
Tesson Ferry Township
AQI 30
University Township
AQI 66
Wildhorse Township
AQI 30
Data Sources
http://www.airnow.gov/

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Cities Nearby

Huntleigh
AQI 66
Des Peres
AQI 66
Crystal Lake Park
AQI 66
Warson Woods
AQI 66
Rock Hill
AQI 66
Kirkwood
AQI 66
Frontenac
AQI 66
Glendale
AQI 66
Country Life Acres
AQI 66
Oakland
AQI 66
Westwood
AQI 66