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  3. Missouri
  4. St. Louis County

St. Louis County

Missouri

2026-10-13 04:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
90
PM10
μg/m³
18.5
PM2.5
μg/m³
5.4
NO2
μg/m³
14.2
SO2
μg/m³
5.7
Weather
  • ℃
  • ℉
25℃
56%
13 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • SO2
Places included
Airport Township
AQI 21
Bonhomme Township
AQI 13
Chesterfield Township
AQI 13
Clayton Township
AQI 20
Concord Township
AQI 13
Creve Coeur Township
AQI 21
Ferguson Township
AQI 21
Gravois Township
AQI 16
Hadley Township
AQI 21
Jefferson Township
AQI 19
Lemay Township
AQI 13
Lewis and Clark Township
AQI 21
Maryland Heights Township
AQI 29
Meramec Township
AQI 29
Midland Township
AQI 21
Missouri River Township
AQI 16
Normandy Township
AQI 21
Northwest Township
AQI 21
Norwood Township
AQI 25
Oakville Township
AQI 13
Queeny Township
AQI 13
Spanish Lake Township
AQI 29
St. Ferdinand Township
AQI 29
Tesson Ferry Township
AQI 13
University Township
AQI 21
Wildhorse Township
AQI 13
Data Sources
http://www.airnow.gov/

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