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  4. St. Charles County

St. Charles County

Missouri

2026-09-29 20:00
AQI (US)
Unhealthy for Sensitive Groups
Pollutants|Pollens
O3
μg/m³
152.1
PM10
μg/m³
31
PM2.5
μg/m³
3.7
NO2
μg/m³
6.8
Weather
  • ℃
  • ℉
28℃
42%
13 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
Places included
Boone Township
AQI 19
Cottleville Township
AQI 19
Dardenne Township
AQI 19
Harvester Township
AQI 19
Lake St. Louis Township
AQI 86
Lindenwood Township
AQI 32
Rivers Township
AQI 101
Spencer Creek Township
AQI 19
St. Peters Township
AQI 19
Wentzville Township
AQI 90
Zumbehl Township
AQI 19
Data Sources
http://www.airnow.gov/

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Cities Nearby

New Melle
AQI 85
Lake Saint Louis
AQI 86
Wentzville
AQI 90
Weldon Spring
AQI 80
Josephville
AQI 45
Weldon Spring Heights
AQI 19
Flint Hill
AQI 90
O'Fallon
AQI 82
Foristell
AQI 90
Cottleville
AQI 19
Saint Paul
AQI 45