Air Quality in Thornton, United States

Clear
31.9°C · 27.4% humidity
31.9°
Feels 31.9°
51
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
36 2pm
36
36
51 5pm
47
44
49 8pm
67
66
65 11pm
64
64
64 2am
64
63
63 5am
43
43
43 8am
43
43
43 11am
43
43
Station readings
53
44
CAMS model adj +9
27
27
27
27
27
27
34
54
54
54
54
54
54
54
54
54
34
34
34
34
34
34
34
34
AD 728×90

Air Quality Index Trend

46h · 1 stn

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

27.4%
Humidity
27.7 km/h
Wind ESE
1009.5 hPa
Pressure
10.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
51
12.09 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Thornton?

Temperature & Precipitation

PM2.5 Trend

46h · 1 station
PM2.512.09 µg/m³ ✓ WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX10.9
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 Thornton?

08-03
35.5° 20.3°
0.94 mm
08-04
33.9° 19.3°
0.31 mm
08-05
37.2° 16.1°
0.13 mm
08-06
33.7° 18.7°
0.06 mm
08-07
35.9° 19.1°
08-08
37.7° 22.0°
08-09
34.9° 21.2°
0.56 mm
Both models agree Avg diff: 3.7°C

Where are air quality stations near Thornton?

64
Thornton Community Park
0.9 km PM2.5: 18.1 µg/m³
83
North Mor Elementary School
1.6 km PM2.5: 27.2 µg/m³
84
Rotella Park
3.0 km PM2.5: 27.8 µg/m³
54
Welby, Colorado, USA
3.8 km PM2.5: 13.5 µg/m³
88
Northwest Open Space
4.5 km PM2.5: 29.5 µg/m³
83
Recreation Center, Senior Center, and Theatre
4.9 km PM2.5: 27.2 µg/m³
32
Adams County Health Department, Sheriff's Substation
5.2 km PM2.5: 7.7 µg/m³
84
Adams Birch Street
5.4 km PM2.5: 28.0 µg/m³ PM10: 115.0 µg/m³
88
Westminster Town Hall
6.5 km PM2.5: 29.8 µg/m³
87
Westminster MAC
6.6 km PM2.5: 29.1 µg/m³

What cities are near Thornton?

51 Northglenn 51 Sherrelwood 51 Commerce City 51 Broomfield 51 Arvada 51 Denver 51 Wheat Ridge 31 Louisville 31 Erie 51 Golden
Get AQI alerts for Thornton

Notify me when air quality reaches:

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 2026-08-07T23:05 UTC.