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  3. Colorado
  4. Douglas County
  5. Castle Rock

Castle Rock

Douglas County, Colorado

2026-05-25 03:00
AQI (US)
Moderate
Pollutants|Pollens
O3
μg/m³
117.1
PM2.5
μg/m³
3.4
PM10
μg/m³
8.8
Weather
  • ℃
  • ℉
17℃
43%
3 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10

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