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  4. Jefferson County

Jefferson County

Missouri

2026-05-12 04:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
5.7
O3
μg/m³
68.6
PM10
μg/m³
22.8
NO2
μg/m³
20.7
SO2
μg/m³
2.6
Weather
  • ℃
  • ℉
11℃
99%
6 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • O3
  • PM10
  • NO2
  • SO2
Places included
Arnold Township
AQI 30
Central Township
AQI 33
High Ridge Township
AQI 33
Imperial Township
AQI 33
Joachim Township
AQI 33
Meramec
AQI 33
Plattin Township
AQI 40
River View Township
AQI 33
Valle Township
AQI 42
Windsor Township
AQI 33
Data Sources
http://www.airnow.gov/

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Crystal City
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Herculaneum
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Cedar Hill Lakes
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Cedar Hill
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Barnhart
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