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  4. Jefferson County

Jefferson County

Missouri

2026-05-12 18:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
111.4
PM2.5
μg/m³
6.7
PM10
μg/m³
9
SO2
μg/m³
2
NO2
μg/m³
2.1
Weather
  • ℃
  • ℉
28℃
46%
14 kph
8 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • SO2
  • NO2
Places included
Arnold Township
AQI 49
Central Township
AQI 38
High Ridge Township
AQI 38
Imperial Township
AQI 38
Joachim Township
AQI 38
Meramec
AQI 38
Plattin Township
AQI 44
River View Township
AQI 38
Valle Township
AQI 46
Windsor Township
AQI 38
Data Sources
http://www.airnow.gov/

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