Castle Rock Real-time Air Quality Index (AQI) & Pollen Report - Air Matters

Castle Rock

Douglas County, Colorado

2026-08-17 23:00

AQI (UK)

Low

Pollutants|Pollens

PM2.5

μg/m³

1.9

Weather

29℃

30%

21 kph

0 of 11

Historical Data

Data Sources

http://www.airnow.gov/

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