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Boulder

Boulder County, Colorado

2026-03-09 19:00
AQI (China)
Excellent
Pollutants|Pollens
O3
μg/m³
92.1
PM10
μg/m³
15
PM2.5
μg/m³
1.5
Weather
  • ℃
  • ℉
21℃
18%
27 kph
5 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • O3
  • PM10
  • PM2.5
Places included
Boulder - CU - 2102 Athens St.
AQI 15
Boulder Reservoir
AQI 29
Data Sources
http://www.airnow.gov/

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Cities Nearby

Boulder
AQI 29
Eldorado Springs
AQI 15
Gunbarrel
AQI 15
Superior
AQI 15
Louisville
AQI 30
Niwot
AQI 15
Coal Creek
AQI 15
Lafayette
AQI 15
Broomfield
AQI 18
Erie
AQI 15
Ward
AQI 15