What is the air quality in Highlands Ranch today?

The current Air Quality Index (AQI) in Highlands Ranch is 18 (Good). PM2.5 concentration is 4.34 µg/m³.

What is the temperature in Highlands Ranch right now?

The current temperature in Highlands Ranch is 30.1°C (feels like 30.1°C). Humidity is 17.0% and wind speed is 63.4 km/h.

Is it safe to go outside in Highlands Ranch?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 10.9 (Extreme).

Air Quality in Highlands Ranch, United States

Rain

30.1°C · 17.0% humidity

30.1°

Feels 30.1°

Good

Air quality is satisfactory. Enjoy outdoor activities.

16 stations

Nearby Monitoring Stations

AQI Forecast

25 12pm

18 3pm

22 6pm

26 9pm

34 12am

25 3am

25 6am

25 9am

Air Quality Index Trend

47h · 2 stn

View full history →

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.

17.0%

Humidity

63.4 km/h

Wind NW

1009.7 hPa

Pressure

10.9

UV Extreme

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5

4.34 µg/m³

PM10▲

20.55 µg/m³

050100150200300500

What is the weather forecast for Highlands Ranch?

Temperature & Precipitation

PM2.5 Trend

47h · 2 stations

PM2.54.34 µg/m³ ✓ WHO

Good

PM1020.55 µg/m³

Good

UV INDEX10.9

Extreme

Station readings (16 stations within 25 km)

4.34

Median

4.77

Average

2.0

Low

6.5

High

PM2.5 µg/m³ · Model: 9.75 · Bias: +5.4

What is the 7-day forecast for Highlands Ranch?

05-28

30.4° 13.6°

1.19 mm

05-29

30.1° 14.3°

12.06 mm

05-30

30.2° 15.8°

0.13 mm

05-31

29.2° 15.5°

1.5 mm

06-01

28.7° 16.6°

06-02

35.5° 20.5°

0.06 mm

06-03

34.7° 19.5°

Both models agree Avg diff: 6.4°C

Where are air quality stations near Highlands Ranch?

Runyon Elementary School

4.3 km PM2.5: 4.4 µg/m³

Arapahoe Community College

7.1 km PM2.5: 2.0 µg/m³ PM10: 6.0 µg/m³

South Bannock Street

7.3 km PM2.5: 4.2 µg/m³

Broken Tee Golf Course

10.6 km PM2.5: 4.7 µg/m³

Sheridan Library

11.2 km PM2.5: 4.5 µg/m³

Sheridan Square Park

11.8 km PM2.5: 4.6 µg/m³

Cushing Park

12.0 km PM2.5: 4.2 µg/m³

Northwest Greenbelt

13.4 km PM2.5: 4.4 µg/m³

May Library

16.6 km PM2.5: 4.6 µg/m³

Smoky Hill Library

17.3 km PM2.5: 5.5 µg/m³

What cities are near Highlands Ranch?

18 Southglenn 19 Castlewood 18 Greenwood Village 12 Littleton 19 Centennial 18 Columbine 20 Ken Caryl 20 Dakota Ridge 19 Parker 22 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 2026-05-28T21:46 UTC.