Air Quality in Highlands Ranch, United States

Clear
32.3°C · 24.8% humidity
32.3°
Feels 32.3°
51
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
40 2pm
40
40
51 5pm
48
46
51 8pm
50
69
68 11pm
68
68
68 2am
47
47
40 5am
40
40
40 8am
47
40
40 11am
40
47
Station readings
53
44
21
CAMS model adj +13
27
27
27
27
27
27
34
34
54
54
54
54
54
34
34
27
27
27
27
34
27
27
27
34
AD 728×90

Air Quality Index Trend

47h · 1 stn

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

24.8%
Humidity
19.4 km/h
Wind ENE
1009.9 hPa
Pressure
12.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
51
12.09 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Highlands Ranch?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.512.09 µg/m³ ✓ WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX12.9
Extreme
AD 300×250
Station readings (1 station within 25 km)
12.09
Median
12.09
Average
12.09
Low
12.09
High
PM2.5 µg/m³ · Model: 7.35 · Bias: -4.7

What is the 7-day forecast for Highlands Ranch?

08-03
35.1° 24.4°
1.88 mm
08-04
36.3° 23.5°
08-05
35.6° 21.3°
1.75 mm
08-06
32.1° 20.2°
0.13 mm
08-07
35.0° 23.1°
0.06 mm
08-08
37.9° 24.2°
08-09
34.3° 25.4°
0.38 mm
Both models agree Avg diff: 3.6°C

Where are air quality stations near Highlands Ranch?

84
Runyon Elementary School
4.3 km PM2.5: 28.0 µg/m³
80
Arapahoe Community College
7.1 km PM2.5: 26.0 µg/m³ PM10: 52.0 µg/m³
85
South Bannock Street
7.3 km PM2.5: 28.3 µg/m³
83
Sheridan Library
11.2 km PM2.5: 27.3 µg/m³
80
Cushing Park
12.0 km PM2.5: 26.1 µg/m³
89
Northwest Greenbelt
13.4 km PM2.5: 30.2 µg/m³
85
May Library
16.6 km PM2.5: 28.3 µg/m³
85
Smoky Hill Library
17.3 km PM2.5: 28.5 µg/m³
48
Dunston Middle School
20.4 km PM2.5: 11.5 µg/m³
84
Edgewater Civic Center
22.7 km PM2.5: 28.0 µg/m³

What cities are near Highlands Ranch?

51 Southglenn 51 Castlewood 51 Greenwood Village 51 Littleton 51 Centennial 51 Columbine 51 Ken Caryl 51 Dakota Ridge 27 Parker 51 Denver
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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 2026-08-07T23:58 UTC.