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  4. St. Louis County

St. Louis County

Missouri

2026-06-20 04:00
CAQI (Europe)
Low
Pollutants|Pollens
NO2
μg/m³
50.7
PM10
μg/m³
21.2
O3
μg/m³
37.5
PM2.5
μg/m³
7.5
SO2
μg/m³
1.1
Weather
  • ℃
  • ℉
22℃
72%
7 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • CAQI (Europe)
  • Pollen
  • NO2
  • PM10
  • O3
  • PM2.5
  • SO2
Places included
Airport Township
AQI 26
Bonhomme Township
AQI 18
Chesterfield Township
AQI 18
Clayton Township
AQI 22
Concord Township
AQI 18
Creve Coeur Township
AQI 23
Ferguson Township
AQI 23
Gravois Township
AQI 20
Hadley Township
AQI 23
Jefferson Township
AQI 22
Lemay Township
AQI 18
Lewis and Clark Township
AQI 23
Maryland Heights Township
AQI 27
Meramec Township
AQI 23
Midland Township
AQI 23
Missouri River Township
AQI 20
Normandy Township
AQI 23
Northwest Township
AQI 23
Norwood Township
AQI 25
Oakville Township
AQI 23
Queeny Township
AQI 19
Spanish Lake Township
AQI 26
St. Ferdinand Township
AQI 26
Tesson Ferry Township
AQI 23
University Township
AQI 23
Wildhorse Township
AQI 18
Data Sources
http://www.airnow.gov/

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Huntleigh
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Des Peres
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Crystal Lake Park
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Warson Woods
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Rock Hill
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Kirkwood
AQI 18
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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