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  4. St. Louis County

St. Louis County

Missouri

2026-10-19 14:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
38.9
NO2
μg/m³
49.5
PM2.5
μg/m³
6.9
O3
μg/m³
28.9
SO2
μg/m³
3.7
Weather
  • ℃
  • ℉
13℃
71%
6 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • NO2
  • PM2.5
  • O3
  • SO2
Places included
Airport Township
AQI 50
Bonhomme Township
AQI 20
Chesterfield Township
AQI 20
Clayton Township
AQI 44
Concord Township
AQI 20
Creve Coeur Township
AQI 50
Ferguson Township
AQI 50
Gravois Township
AQI 30
Hadley Township
AQI 50
Jefferson Township
AQI 43
Lemay Township
AQI 20
Lewis and Clark Township
AQI 50
Maryland Heights Township
AQI 50
Meramec Township
AQI 20
Midland Township
AQI 50
Missouri River Township
AQI 30
Normandy Township
AQI 50
Northwest Township
AQI 50
Norwood Township
AQI 55
Oakville Township
AQI 20
Queeny Township
AQI 20
Spanish Lake Township
AQI 60
St. Ferdinand Township
AQI 60
Tesson Ferry Township
AQI 20
University Township
AQI 50
Wildhorse Township
AQI 20
Data Sources
http://www.airnow.gov/

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