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  4. Jefferson County

Jefferson County

Missouri

2026-05-12 05:00
AQI (US)
Moderate
Pollutants|Pollens
PM2.5
μg/m³
10.7
O3
μg/m³
66.4
PM10
μg/m³
14
NO2
μg/m³
18.1
SO2
μg/m³
2.6
Weather
  • ℃
  • ℉
11℃
99%
8 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • O3
  • PM10
  • NO2
  • SO2
Places included
Arnold Township
AQI 54
Central Township
AQI 54
High Ridge Township
AQI 54
Imperial Township
AQI 54
Joachim Township
AQI 54
Meramec
AQI 54
Plattin Township
AQI 37
River View Township
AQI 54
Valle Township
AQI 38
Windsor Township
AQI 54
Data Sources
http://www.airnow.gov/

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AQI 54
De Soto
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Festus
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AQI 37
Pevely
AQI 54
Crystal City
AQI 54
Herculaneum
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Cedar Hill Lakes
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Cedar Hill
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Barnhart
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