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  4. St. Louis County

St. Louis County

Missouri

2026-10-12 12:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
23
O3
μg/m³
62.1
PM2.5
μg/m³
11.1
NO2
μg/m³
31.4
SO2
μg/m³
2.6
Weather
  • ℃
  • ℉
19℃
82%
2 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • O3
  • PM2.5
  • NO2
  • SO2
Places included
Airport Township
AQI 25
Bonhomme Township
AQI 15
Chesterfield Township
AQI 14
Clayton Township
AQI 23
Concord Township
AQI 14
Creve Coeur Township
AQI 25
Ferguson Township
AQI 25
Gravois Township
AQI 18
Hadley Township
AQI 25
Jefferson Township
AQI 23
Lemay Township
AQI 15
Lewis and Clark Township
AQI 25
Maryland Heights Township
AQI 27
Meramec Township
AQI 14
Midland Township
AQI 25
Missouri River Township
AQI 18
Normandy Township
AQI 25
Northwest Township
AQI 25
Norwood Township
AQI 39
Oakville Township
AQI 14
Queeny Township
AQI 14
Spanish Lake Township
AQI 52
St. Ferdinand Township
AQI 52
Tesson Ferry Township
AQI 14
University Township
AQI 25
Wildhorse Township
AQI 14
Data Sources
http://www.airnow.gov/

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