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)
79
Moderate
Thornton, Colorado
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
23.86 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
69.44 μg/m³
0
55
155
255
425
605+
16.02 ppb
0
55
71
86
201
201+
1.98 ppb
0
36
76
186
605
1005+
14.05 ppb
0
54
101
361
1250
2050+
0.33 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Thornton, Colorado
Thornton, Colorado
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AQI 71
Moderate
19.84μg/m³
PM2.5
61.44μg/m³
PM10
22.96ppb
O3
0.20ppb
SO2
10.74ppb
NO2
0.52ppm
CO
AQI 69
Moderate
19.23μg/m³
PM2.5
65.32μg/m³
PM10
22.59ppb
O3
0.21ppb
SO2
13.91ppb
NO2
0.51ppm
CO
AQI 69
Moderate
19.15μg/m³
PM2.5
65.50μg/m³
PM10
22.55ppb
O3
0.21ppb
SO2
14.24ppb
NO2
0.51ppm
CO
AQI 69
Moderate
18.97μg/m³
PM2.5
66.31μg/m³
PM10
22.46ppb
O3
0.21ppb
SO2
15.14ppb
NO2
0.49ppm
CO
AQI 69
Moderate
18.68μg/m³
PM2.5
66.74μg/m³
PM10
22.30ppb
O3
0.21ppb
SO2
16.08ppb
NO2
0.49ppm
CO
AQI 71
Moderate
19.65μg/m³
PM2.5
61.59μg/m³
PM10
22.84ppb
O3
0.20ppb
SO2
11.90ppb
NO2
0.51ppm
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 07:00:00 on 2025-09-05.
In the last 24 hours, the best air quality in Thornton, Colorado was observed at 05:00:00 on 2025-09-06.
As of now, the AQI in Thornton, Colorado is 71, indicating Moderate conditions.
Thornton, Colorado air has the highest levels of PM2.5.
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 19.613 μg/m3.
The PM10 concentration in Thornton, Colorado is 63.556 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Thornton, Colorado is 0.515 ppm.
Currently, Thornton, Colorado has a sulfur dioxide (SO2) concentration of 0.305 ppb.
The current ozone (O3) level in Thornton, Colorado at the moment is 22.077 ppm.
Nitrogen dioxide (NO2) level in Thornton, Colorado at the moment is 10.73 ppb.
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