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  4. Jefferson County

Jefferson County

Missouri

2026-05-19 17:00
AQI (India)
Satisfactory
Pollutants|Pollens
O3
μg/m³
85.7
PM10
μg/m³
25
NO2
μg/m³
5.5
PM2.5
μg/m³
3.3
SO2
μg/m³
2.9
Weather
  • ℃
  • ℉
23℃
69%
15 kph
7 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (India)
  • Pollen
  • O3
  • PM10
  • NO2
  • PM2.5
  • SO2
Places included
Arnold Township
AQI 86
Central Township
AQI 25
High Ridge Township
AQI 25
Imperial Township
AQI 25
Joachim Township
AQI 25
Meramec
AQI 25
Plattin Township
AQI 92
River View Township
AQI 25
Valle Township
AQI 93
Windsor Township
AQI 25
Data Sources
http://www.airnow.gov/

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