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  4. St. Louis County

St. Louis County

Missouri

2026-10-12 03:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
29.8
O3
μg/m³
92.1
NO2
μg/m³
18.7
PM2.5
μg/m³
5.6
SO2
μg/m³
2.9
Weather
  • ℃
  • ℉
22℃
71%
2 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • NO2
  • PM2.5
  • SO2
Places included
Airport Township
AQI 29
Bonhomme Township
AQI 25
Chesterfield Township
AQI 25
Clayton Township
AQI 29
Concord Township
AQI 25
Creve Coeur Township
AQI 29
Ferguson Township
AQI 29
Gravois Township
AQI 27
Hadley Township
AQI 29
Jefferson Township
AQI 28
Lemay Township
AQI 25
Lewis and Clark Township
AQI 29
Maryland Heights Township
AQI 29
Meramec Township
AQI 30
Midland Township
AQI 29
Missouri River Township
AQI 27
Normandy Township
AQI 29
Northwest Township
AQI 29
Norwood Township
AQI 42
Oakville Township
AQI 25
Queeny Township
AQI 25
Spanish Lake Township
AQI 54
St. Ferdinand Township
AQI 54
Tesson Ferry Township
AQI 25
University Township
AQI 29
Wildhorse Township
AQI 25
Data Sources
http://www.airnow.gov/

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Cities Nearby

Huntleigh
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Des Peres
AQI 29
Crystal Lake Park
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Warson Woods
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Rock Hill
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Kirkwood
AQI 25
Frontenac
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Glendale
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Country Life Acres
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Oakland
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Westwood
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