Air Quality in Thornton, United States

Clear
22.2°C · 25.8% humidity
22.2°
Feels 22.2°
19
Good
Air quality is satisfactory. Enjoy outdoor activities.
35 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
0 6am
0
0
19 9am
14
10
7 12pm
5
4
3 3pm
2
1
1 6pm
1
0
0 9pm
0
7
7 12am
27
27
27 3am
7
7
Station readings 28h ago
AQI 0
PM2.5 0.1 µg/m³ · 28h ago
AD 728×90

Air Quality Index Trend

45h · 48 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.

25.8%
Humidity
23.9 km/h
Wind NE
1019.0 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
19
4.63 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Thornton?

Temperature & Precipitation

PM2.5 Trend

45h · 48 stations
PM2.54.63 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX5.9
High
AD 300×250
Station readings (35 stations within 25 km)
4.63
Median
4.63
Average
3.36
Low
6.06
High
PM2.5 µg/m³ · Model: 6.5 · Bias: +1.9

What is the 7-day forecast for Thornton?

09-05
28.4° 17.1°
09-06
34.5° 9.9°
6.25 mm
09-07
31.1° 17.9°
2.94 mm
09-08
26.5° 17.7°
0.19 mm
09-09
33.2° 19.1°
0.69 mm
09-10
33.0° 12.9°
0.06 mm
09-11
29.8° 13.7°
0.38 mm
Both models agree Avg diff: 4.1°C

Where are air quality stations near Thornton?

18
Thornton Community Park
0.9 km PM2.5: 4.4 µg/m³
22
North Mor Elementary School
1.6 km PM2.5: 5.3 µg/m³
17
North Star
2.3 km PM2.5: 4.1 µg/m³
22
Rotella Park
3.0 km PM2.5: 5.2 µg/m³
21
Welby, Colorado, USA
3.8 km PM2.5: 5.0 µg/m³
33
Welby, Colorado, USA
3.8 km PM2.5: 7.9 µg/m³
20
Northwest Open Space
4.5 km PM2.5: 4.7 µg/m³
20
Recreation Center, Senior Center, and Theatre
4.9 km PM2.5: 4.7 µg/m³
15
Adams County Health Department, Sheriff's Substation
5.2 km PM2.5: 3.5 µg/m³
25
Adams Birch Street
5.4 km PM2.5: 6.0 µg/m³ PM10: 31.0 µg/m³

What cities are near Thornton?

20 Northglenn 20 Sherrelwood 21 Commerce City 20 Broomfield 19 Arvada 20 Denver 18 Wheat Ridge 20 Louisville 20 Erie 18 Golden
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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 2026-09-05T15:47 UTC.