What is the air quality in Castle Rock today?

The current Air Quality Index (AQI) in Castle Rock is 29 (Good). PM2.5 concentration is 6.86 µg/m³.

What is the temperature in Castle Rock right now?

The current temperature in Castle Rock is 31.2°C (feels like 31.2°C). Humidity is 17.9% and wind speed is 33.3 km/h.

Is it safe to go outside in Castle Rock?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 2.9 (Moderate).

Air Quality in Castle Rock, United States

Clear

31.2°C · 17.9% humidity

31.2°

Feels 31.2°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

25 3pm

29 6pm

27 9pm

26 12am

27 3am

27 6am

27 9am

24 12pm

Air Quality Index Trend

46h · 22 stn

View full history →

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.

17.9%

Humidity

33.3 km/h

Wind ESE

1001.6 hPa

Pressure

2.9

UV Moderate

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

6.86 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Castle Rock?

Temperature & Precipitation

PM2.5 Trend

46h · 22 stations

PM2.56.86 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX2.9

Moderate

Both models agree Avg diff: 5.2°C

Where are air quality stations near Castle Rock?

Runyon Elementary School

26.7 km PM2.5: 7.2 µg/m³

What cities are near Castle Rock?

27 Parker 30 Highlands Ranch 29 Centennial 30 Castlewood 30 Southglenn 30 Greenwood Village 31 Littleton 32 Columbine 32 Ken Caryl 33 Dakota Ridge

Get AQI alerts for Castle Rock

Notify me when air quality reaches:

ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T00:50 UTC.