Air Quality in Castlewood, United States

Clear
35.1°C · 13.3% humidity
35.1°
Feels 35.1°
60
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
22 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
14 11am
14
14
60 2pm
47
38
31 5pm
26
23
20 8pm
18
19
18 11pm
18
24
24 2am
17
16
16 5am
16
16
16 8am
16
14
Station readings
14
20
6
6
CAMS model adj -11
25
25
25
25
25
25
25
25
25
25
25
27
27
27
34
34
27
27
27
27
27
27
27
25
AD 728×90

Air Quality Index Trend

16h · 1 stn

Castlewood's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Castlewood is 1.1× the WHO 24-hour guideline of 15 µg/m³.

13.3%
Humidity
9.0 km/h
Wind NNW
1009.5 hPa
Pressure
10.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
60
16.38 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Castlewood?

Temperature & Precipitation

PM2.5 Trend

16h · 1 station
PM2.516.38 µg/m³ ×1.1 WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX10.9
Extreme
AD 300×250
Station readings (22 stations within 25 km)
16.38
Median
15.66
Average
2.58
Low
18.66
High
PM2.5 µg/m³ · Model: 7.1 · Bias: -9.3

What is the 7-day forecast for Castlewood?

07-21
35.1° 22.9°
07-22
37.0° 21.5°
07-23
25.0° 18.4°
1.13 mm
07-24
35.8° 22.9°
0.06 mm
07-25
35.4° 21.5°
3.31 mm
07-26
32.4° 22.3°
6.31 mm
07-27
36.7° 21.5°
Both models agree Avg diff: 4.0°C

Where are air quality stations near Castlewood?

62
Runyon Elementary School
8.3 km PM2.5: 17.5 µg/m³
61
South Bannock Street
8.5 km PM2.5: 16.9 µg/m³
42
Arapahoe Community College
10.4 km PM2.5: 10.0 µg/m³ PM10: 36.0 µg/m³
60
Smoky Hill Library
10.6 km PM2.5: 16.5 µg/m³
62
Broken Tee Golf Course
11.6 km PM2.5: 17.2 µg/m³
59
Cushing Park
11.7 km PM2.5: 15.9 µg/m³
63
May Library
11.8 km PM2.5: 17.8 µg/m³
59
Sheridan Library
12.8 km PM2.5: 16.1 µg/m³
61
Sheridan Square Park
13.2 km PM2.5: 16.9 µg/m³
64
Northwest Greenbelt
13.4 km PM2.5: 18.3 µg/m³

What cities are near Castlewood?

60 Centennial 60 Southglenn 60 Greenwood Village 60 Highlands Ranch 53 Littleton 62 Parker 57 Columbine 57 Ken Caryl 59 Denver 56 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 2026-07-21T20:45 UTC.