Air Quality in Castle Rock, United States

Clear
17.2°C · 22.2% humidity
17.2°
Feels 17.2°
32
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model

Nearby Monitoring Stations

AQI Forecast
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Air Quality Index Trend

45h · 26 stn

Castle Rock's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

22.2%
Humidity
21.6 km/h
Wind E
1012.0 hPa
Pressure
0.0
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
32
7.71 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Castle Rock?

Temperature & Precipitation

PM2.5 Trend

45h · 26 stations
PM2.57.71 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX0.0
Low

What is the 7-day forecast for Castle Rock?

10-21
21.1° 4.2°
10-22
14.2° 5.1°
10-23
9.8° -2.3°
4.88 mm
10-24
18.5° 10.5°
10-25
13.9° 5.6°
0.25 mm
10-26
20.6° 5.6°
10-27
16.7° 0.7°
Both models agree Avg diff: 4.1°C

Where are air quality stations near Castle Rock?

16
Chatfield Park, Colorado, USA
25.8 km PM2.5: 3.8 µg/m³
21
Chatfield Park, Colorado, USA
25.8 km PM2.5: 5.0 µg/m³
24
Runyon Elementary School
26.7 km PM2.5: 5.8 µg/m³

What cities are near Castle Rock?

25 Parker 23 Highlands Ranch 24 Centennial 24 Castlewood 24 Southglenn 24 Greenwood Village 24 Littleton 23 Columbine 22 Ken Caryl 23 Dakota Ridge
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-21T02:27 UTC.