Stay updated with real-time air quality in Thornton, Colorado featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
61
Moderate
Thornton, Colorado
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
8.20 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
55.77 μg/m³
0
55
155
255
425
605+
57.67 ppb
0
55
71
86
201
201+
0.36 ppb
0
36
76
186
605
1005+
5.92 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Thornton, Colorado
Thornton, Colorado
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AQI 77
Moderate
7.84μg/m³
PM2.5
40.47μg/m³
PM10
62.81ppb
O3
0.23ppb
SO2
3.43ppb
NO2
0.17ppm
CO
AQI 71
Moderate
7.31μg/m³
PM2.5
35.26μg/m³
PM10
60.95ppb
O3
0.50ppb
SO2
5.49ppb
NO2
0.16ppm
CO
AQI 71
Moderate
7.29μg/m³
PM2.5
34.88μg/m³
PM10
60.82ppb
O3
0.53ppb
SO2
5.72ppb
NO2
0.16ppm
CO
AQI 67
Moderate
7.21μg/m³
PM2.5
33.80μg/m³
PM10
60.47ppb
O3
0.60ppb
SO2
6.39ppb
NO2
0.15ppm
CO
AQI 67
Moderate
7.06μg/m³
PM2.5
31.75μg/m³
PM10
59.65ppb
O3
0.72ppb
SO2
6.76ppb
NO2
0.15ppm
CO
AQI 74
Moderate
7.81μg/m³
PM2.5
38.81μg/m³
PM10
62.41ppb
O3
0.31ppb
SO2
4.29ppb
NO2
0.17ppm
CO
Air quality and pollutant data for Colorado, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Thornton, Colorado is updated every hour for accuracy.
In the past 24 hours, the air quality in Thornton, Colorado was at its worst at 02:00:00 on 2025-07-21.
In the last 24 hours, the best air quality in Thornton, Colorado was observed at 11:00:00 on 2025-07-21.
As of now, the AQI in Thornton, Colorado is 77, indicating Moderate conditions.
Thornton, Colorado air has the highest levels of O3.
Poor air quality in Thornton, Colorado means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Thornton, Colorado are currently 7.619 μg/m3.
The PM10 concentration in Thornton, Colorado is 37.815 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Thornton, Colorado is 0.322 ppm.
Currently, Thornton, Colorado has a sulfur dioxide (SO2) concentration of 0.356 ppb.
The current ozone (O3) level in Thornton, Colorado at the moment is 62.9 ppm.
Nitrogen dioxide (NO2) level in Thornton, Colorado at the moment is 6.728 ppb.
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