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  3. Missouri
  4. St. Louis County

St. Louis County

Missouri

2026-10-21 05:00
AQI (US)
Moderate
Pollutants|Pollens
PM2.5
μg/m³
14.6
NO2
μg/m³
68.4
PM10
μg/m³
31.5
O3
μg/m³
24.6
SO2
μg/m³
3.1
Weather
  • ℃
  • ℉
12℃
81%
3 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • NO2
  • PM10
  • O3
  • SO2
Places included
Airport Township
AQI 62
Bonhomme Township
AQI 61
Chesterfield Township
AQI 60
Clayton Township
AQI 62
Concord Township
AQI 61
Creve Coeur Township
AQI 62
Ferguson Township
AQI 64
Gravois Township
AQI 62
Hadley Township
AQI 62
Jefferson Township
AQI 62
Lemay Township
AQI 61
Lewis and Clark Township
AQI 62
Maryland Heights Township
AQI 62
Meramec Township
AQI 58
Midland Township
AQI 62
Missouri River Township
AQI 62
Normandy Township
AQI 63
Northwest Township
AQI 62
Norwood Township
AQI 61
Oakville Township
AQI 58
Queeny Township
AQI 58
Spanish Lake Township
AQI 60
St. Ferdinand Township
AQI 59
Tesson Ferry Township
AQI 58
University Township
AQI 62
Wildhorse Township
AQI 58
Data Sources
http://www.airnow.gov/

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Cities Nearby

Huntleigh
AQI 62
Des Peres
AQI 62
Crystal Lake Park
AQI 62
Warson Woods
AQI 62
Rock Hill
AQI 62
Kirkwood
AQI 62
Frontenac
AQI 62
Glendale
AQI 62
Country Life Acres
AQI 62
Oakland
AQI 62
Westwood
AQI 62