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  4. Jefferson County

Jefferson County

Missouri

2026-05-13 08:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
81.4
PM10
μg/m³
13
PM2.5
μg/m³
2.7
NO2
μg/m³
3.9
SO2
μg/m³
2.3
Weather
  • ℃
  • ℉
14℃
86%
13 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • NO2
  • SO2
Places included
Arnold Township
AQI 26
Central Township
AQI 13
High Ridge Township
AQI 13
Imperial Township
AQI 13
Joachim Township
AQI 13
Meramec
AQI 13
Plattin Township
AQI 29
River View Township
AQI 13
Valle Township
AQI 29
Windsor Township
AQI 13
Data Sources
http://www.airnow.gov/

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