Stay updated with real-time air quality in Denver, 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)
27
Good
Denver, Colorado
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
5.34 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.23 μg/m³
0
55
155
255
425
605+
21.15 ppb
0
55
71
86
201
201+
0.45 ppb
0
36
76
186
605
1005+
25.59 ppb
0
54
101
361
1250
2050+
0.48 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Denver, Colorado
Denver, Colorado
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AQI 36
Good
5.12μg/m³
PM2.5
38.92μg/m³
PM10
19.25ppb
O3
1.33ppb
SO2
34.72ppb
NO2
0.45ppm
CO
AQI 33
Good
6.38μg/m³
PM2.5
31.68μg/m³
PM10
21.99ppb
O3
0.72ppb
SO2
29.89ppb
NO2
0.45ppm
CO
AQI 38
Good
6.56μg/m³
PM2.5
32.54μg/m³
PM10
24.98ppb
O3
0.73ppb
SO2
29.12ppb
NO2
0.46ppm
CO
AQI 38
Good
6.50μg/m³
PM2.5
40.19μg/m³
PM10
16.31ppb
O3
1.17ppb
SO2
33.29ppb
NO2
0.43ppm
CO
AQI 64
Moderate
7.73μg/m³
PM2.5
82.09μg/m³
PM10
9.47ppb
O3
2.95ppb
SO2
40.51ppb
NO2
0.43ppm
CO
AQI 33
Good
6.21μg/m³
PM2.5
32.33μg/m³
PM10
29.41ppb
O3
1.01ppb
SO2
29.13ppb
NO2
0.45ppm
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 Denver, Colorado is updated every hour for accuracy.
In the past 24 hours, the air quality in Denver, Colorado was at its worst at 03:00:00 on 2025-10-22.
In the last 24 hours, the best air quality in Denver, Colorado was observed at 03:00:00 on 2025-10-22.
As of now, the AQI in Denver, Colorado is 27, indicating Good conditions.
Denver, Colorado air has the highest levels of PM2.5.
Poor air quality in Denver, Colorado means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Denver, Colorado are currently 5.344 μg/m3.
The PM10 concentration in Denver, Colorado is 25.227 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Denver, Colorado is 0.485 ppm.
Currently, Denver, Colorado has a sulfur dioxide (SO2) concentration of 0.454 ppb.
The current ozone (O3) level in Denver, Colorado at the moment is 21.146 ppm.
Nitrogen dioxide (NO2) level in Denver, Colorado at the moment is 25.586 ppb.
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