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  4. St. Louis County

St. Louis County

Missouri

2026-10-12 13:00
AQI (China)
Excellent
Pollutants|Pollens
PM10
μg/m³
29.9
NO2
μg/m³
36.6
PM2.5
μg/m³
10.8
O3
μg/m³
48.2
SO2
μg/m³
2.9
Weather
  • ℃
  • ℉
19℃
82%
2 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • PM10
  • NO2
  • PM2.5
  • O3
  • SO2
Places included
Airport Township
AQI 32
Bonhomme Township
AQI 20
Chesterfield Township
AQI 20
Clayton Township
AQI 30
Concord Township
AQI 20
Creve Coeur Township
AQI 32
Ferguson Township
AQI 32
Gravois Township
AQI 24
Hadley Township
AQI 32
Jefferson Township
AQI 29
Lemay Township
AQI 20
Lewis and Clark Township
AQI 32
Maryland Heights Township
AQI 32
Meramec Township
AQI 22
Midland Township
AQI 32
Missouri River Township
AQI 24
Normandy Township
AQI 32
Northwest Township
AQI 32
Norwood Township
AQI 47
Oakville Township
AQI 22
Queeny Township
AQI 22
Spanish Lake Township
AQI 59
St. Ferdinand Township
AQI 59
Tesson Ferry Township
AQI 22
University Township
AQI 32
Wildhorse Township
AQI 22
Data Sources
http://www.airnow.gov/

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