What is the air quality in Littleton today?

The current Air Quality Index (AQI) in Littleton is 18 (Good). PM2.5 concentration is 4.39 µg/m³.

What is the temperature in Littleton right now?

The current temperature in Littleton is 22.2°C (feels like 22.2°C). Humidity is 25.3% and wind speed is 36.0 km/h.

Is it safe to go outside in Littleton?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 12.9 (Extreme).

Air Quality in Littleton, United States

Clear

22.2°C · 25.3% humidity

22.2°

Feels 22.2°

Good

Air quality is satisfactory. Enjoy outdoor activities.

23 stations

Nearby Monitoring Stations

AQI Forecast Calibrated

0 7am

18 10am

8 1pm

3 4pm

1 7pm

7 10pm

0 1am

0 4am

Station readings 29h ago

AQI 0

PM2.5 0.1 µg/m³ · 29h ago

Air Quality Index Trend

45h · 38 stn

View full history →

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

25.3%

Humidity

36.0 km/h

Wind NE

1019.0 hPa

Pressure

12.9

UV Extreme

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

4.39 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Littleton?

Temperature & Precipitation

PM2.5 Trend

45h · 38 stations

PM2.54.39 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX12.9

Extreme

Station readings (23 stations within 25 km)

4.39

Median

4.47

Average

3.38

Low

6.0

High

PM2.5 µg/m³ · Model: 5.9 · Bias: +1.5

What is the 7-day forecast for Littleton?

09-05

30.4° 22.2°

09-06

34.2° 11.5°

5.38 mm

09-07

31.5° 19.6°

3.81 mm

09-08

26.5° 18.8°

0.06 mm

09-09

31.7° 21.8°

0.19 mm

09-10

32.1° 14.5°

0.13 mm

09-11

30.4° 16.2°

Both models agree Avg diff: 4.7°C

Where are air quality stations near Littleton?

Arapahoe Community College

1.0 km PM2.5: 5.0 µg/m³ PM10: 17.0 µg/m³

South Bannock Street

2.3 km PM2.5: 4.4 µg/m³

Broken Tee Golf Course

3.3 km PM2.5: 4.5 µg/m³

Runyon Elementary School

3.4 km PM2.5: 4.4 µg/m³

Sheridan Library

3.5 km PM2.5: 4.2 µg/m³

Sheridan Square Park

4.1 km PM2.5: 4.3 µg/m³

Cushing Park

5.5 km PM2.5: 4.4 µg/m³

Northwest Greenbelt

6.3 km PM2.5: 4.5 µg/m³

Dunston Middle School

13.0 km PM2.5: 3.8 µg/m³

May Library

13.7 km PM2.5: 4.7 µg/m³

What cities are near Littleton?

18 Columbine 18 Greenwood Village 18 Southglenn 18 Highlands Ranch 18 Ken Caryl 18 Castlewood 18 Dakota Ridge 19 Centennial 19 Denver 18 Wheat 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 2026-09-05T16:32 UTC.