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  2. United States
  3. Missouri
  4. St. Louis County

St. Louis County

Missouri

2026-10-21 00:00
AQI (US)
Good
Pollutants|Pollens
NO2
μg/m³
93.2
PM2.5
μg/m³
6.2
O3
μg/m³
75
PM10
μg/m³
29
SO2
μg/m³
3.4
Weather
  • ℃
  • ℉
16℃
63%
7 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • NO2
  • PM2.5
  • O3
  • PM10
  • SO2
Places included
Airport Township
AQI 44
Bonhomme Township
AQI 32
Chesterfield Township
AQI 32
Clayton Township
AQI 33
Concord Township
AQI 32
Creve Coeur Township
AQI 33
Ferguson Township
AQI 41
Gravois Township
AQI 33
Hadley Township
AQI 33
Jefferson Township
AQI 33
Lemay Township
AQI 32
Lewis and Clark Township
AQI 33
Maryland Heights Township
AQI 37
Meramec Township
AQI 31
Midland Township
AQI 33
Missouri River Township
AQI 33
Normandy Township
AQI 37
Northwest Township
AQI 33
Norwood Township
AQI 45
Oakville Township
AQI 31
Queeny Township
AQI 31
Spanish Lake Township
AQI 52
St. Ferdinand Township
AQI 53
Tesson Ferry Township
AQI 31
University Township
AQI 33
Wildhorse Township
AQI 31
Data Sources
http://www.airnow.gov/

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Cities Nearby

Huntleigh
AQI 33
Des Peres
AQI 33
Crystal Lake Park
AQI 33
Warson Woods
AQI 33
Rock Hill
AQI 33
Kirkwood
AQI 33
Frontenac
AQI 33
Glendale
AQI 33
Country Life Acres
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Oakland
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Westwood
AQI 33