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  4. Jefferson County

Jefferson County

Missouri

2026-05-13 22:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
107.1
PM10
μg/m³
12
PM2.5
μg/m³
3.8
NO2
μg/m³
2.9
SO2
μg/m³
2.3
Weather
  • ℃
  • ℉
22℃
43%
15 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • SO2
Places included
Arnold Township
AQI 34
Central Township
AQI 12
High Ridge Township
AQI 12
Imperial Township
AQI 12
Joachim Township
AQI 12
Meramec
AQI 12
Plattin Township
AQI 33
River View Township
AQI 12
Valle Township
AQI 34
Windsor Township
AQI 12
Data Sources
http://www.airnow.gov/

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