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  4. St. Louis County

St. Louis County

Missouri

2026-10-13 20:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
34.1
O3
μg/m³
85.7
NO2
μg/m³
25.1
PM2.5
μg/m³
3.6
SO2
μg/m³
2.6
Weather
  • ℃
  • ℉
34℃
49%
17 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • NO2
  • PM2.5
  • SO2
Places included
Airport Township
AQI 55
Bonhomme Township
AQI 9
Chesterfield Township
AQI 9
Clayton Township
AQI 47
Concord Township
AQI 9
Creve Coeur Township
AQI 55
Ferguson Township
AQI 55
Gravois Township
AQI 25
Hadley Township
AQI 55
Jefferson Township
AQI 45
Lemay Township
AQI 9
Lewis and Clark Township
AQI 55
Maryland Heights Township
AQI 55
Meramec Township
AQI 27
Midland Township
AQI 55
Missouri River Township
AQI 25
Normandy Township
AQI 55
Northwest Township
AQI 55
Norwood Township
AQI 44
Oakville Township
AQI 9
Queeny Township
AQI 9
Spanish Lake Township
AQI 31
St. Ferdinand Township
AQI 31
Tesson Ferry Township
AQI 9
University Township
AQI 55
Wildhorse Township
AQI 9
Data Sources
http://www.airnow.gov/

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Cities Nearby

Huntleigh
AQI 9
Des Peres
AQI 9
Crystal Lake Park
AQI 9
Warson Woods
AQI 55
Rock Hill
AQI 55
Kirkwood
AQI 9
Frontenac
AQI 55
Glendale
AQI 9
Country Life Acres
AQI 9
Oakland
AQI 9
Westwood
AQI 55