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  4. Weld County

Weld County

Colorado

2026-08-09 04:00
AQI (India)
Moderately polluted
Pollutants|Pollens
O3
μg/m³
139.3
PM10
μg/m³
40.5
PM2.5
μg/m³
15.1
CO
μg/m³
125
Weather
  • ℃
  • ℉
26℃
24%
13 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (India)
  • Pollen
  • O3
  • PM10
  • PM2.5
  • CO
Places included
Ault
AQI 25
Dacono
AQI 42
Eaton
AQI 25
Erie
AQI 39
Evans
AQI 25
Firestone
AQI 26
Frederick
AQI 39
Gilcrest
AQI 26
Greeley
AQI 158
Grover
AQI 16
Hudson
AQI 26
Kersey
AQI 25
La Salle
AQI 25
Milliken
AQI 26
Northglenn
AQI 42
Pierce
AQI 23
Platteville
AQI 26
Severance
AQI 23
Windsor
AQI 23
Data Sources
http://www.airnow.gov/

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Cities Nearby

Evans
AQI 25
Greeley
AQI 158
La Salle
AQI 25
Kersey
AQI 25
Gilcrest
AQI 26
Milliken
AQI 26
Eaton
AQI 25
Windsor
AQI 23
Severance
AQI 23
Ault
AQI 25
Platteville
AQI 26