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  4. St. Charles County

St. Charles County

Missouri

2026-09-30 12:00
AQI (US)
Moderate
Pollutants|Pollens
PM10
μg/m³
68.5
PM2.5
μg/m³
12.1
O3
μg/m³
60
NO2
μg/m³
25.7
Weather
  • ℃
  • ℉
22℃
58%
6 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM10
  • PM2.5
  • O3
  • NO2
Places included
Boone Township
AQI 56
Cottleville Township
AQI 56
Dardenne Township
AQI 56
Harvester Township
AQI 56
Lake St. Louis Township
AQI 47
Lindenwood Township
AQI 56
Rivers Township
AQI 59
Spencer Creek Township
AQI 56
St. Peters Township
AQI 56
Wentzville Township
AQI 40
Zumbehl Township
AQI 56
Data Sources
http://www.airnow.gov/

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Cities Nearby

New Melle
AQI 49
Lake Saint Louis
AQI 47
Wentzville
AQI 40
Weldon Spring
AQI 52
Josephville
AQI 46
Weldon Spring Heights
AQI 56
Flint Hill
AQI 40
O'Fallon
AQI 54
Foristell
AQI 37
Cottleville
AQI 56
Saint Paul
AQI 46