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  3. Missouri
  4. St. Louis County

St. Louis County

Missouri

2026-10-21 13:00
AQI (US)
Moderate
Pollutants|Pollens
PM2.5
μg/m³
16.2
PM10
μg/m³
71.4
NO2
μg/m³
54.8
SO2
μg/m³
6.3
O3
μg/m³
6.4
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 82
Bonhomme Township
AQI 62
Chesterfield Township
AQI 55
Clayton Township
AQI 73
Concord Township
AQI 61
Creve Coeur Township
AQI 82
Ferguson Township
AQI 82
Gravois Township
AQI 70
Hadley Township
AQI 82
Jefferson Township
AQI 71
Lemay Township
AQI 62
Lewis and Clark Township
AQI 82
Maryland Heights Township
AQI 82
Meramec Township
AQI 39
Midland Township
AQI 82
Missouri River Township
AQI 70
Normandy Township
AQI 82
Northwest Township
AQI 82
Norwood Township
AQI 67
Oakville Township
AQI 39
Queeny Township
AQI 39
Spanish Lake Township
AQI 66
St. Ferdinand Township
AQI 64
Tesson Ferry Township
AQI 39
University Township
AQI 82
Wildhorse Township
AQI 39
Data Sources
http://www.airnow.gov/

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Cities Nearby

Huntleigh
AQI 70
Des Peres
AQI 70
Crystal Lake Park
AQI 70
Warson Woods
AQI 82
Rock Hill
AQI 82
Kirkwood
AQI 70
Frontenac
AQI 82
Glendale
AQI 70
Country Life Acres
AQI 70
Oakland
AQI 70
Westwood
AQI 82