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)
37
Good
Denver, Colorado
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
0.90 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
3.56 μg/m³
0
55
155
255
425
605+
40.31 ppb
0
55
71
86
201
201+
0.12 ppb
0
36
76
186
605
1005+
6.27 ppb
0
54
101
361
1250
2050+
0.36 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Denver, Colorado
Denver, Colorado
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AQI 31
Good
1.35μg/m³
PM2.5
4.89μg/m³
PM10
32.66ppb
O3
0.27ppb
SO2
11.83ppb
NO2
0.21ppm
CO
AQI 37
Good
1.31μg/m³
PM2.5
5.01μg/m³
PM10
39.83ppb
O3
0.26ppb
SO2
10.72ppb
NO2
0.20ppm
CO
AQI 37
Good
1.38μg/m³
PM2.5
5.31μg/m³
PM10
40.18ppb
O3
0.27ppb
SO2
10.37ppb
NO2
0.22ppm
CO
AQI 34
Good
1.49μg/m³
PM2.5
5.55μg/m³
PM10
37.00ppb
O3
0.24ppb
SO2
13.08ppb
NO2
0.16ppm
CO
AQI 24
Good
2.43μg/m³
PM2.5
8.50μg/m³
PM10
26.05ppb
O3
0.26ppb
SO2
16.80ppb
NO2
0.17ppm
CO
AQI 31
Good
1.57μg/m³
PM2.5
6.52μg/m³
PM10
33.15ppb
O3
0.29ppb
SO2
9.19ppb
NO2
0.23ppm
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 04:00:00 on 2025-12-06.
In the last 24 hours, the best air quality in Denver, Colorado was observed at 06:00:00 on 2025-12-06.
As of now, the AQI in Denver, Colorado is 37, indicating Good conditions.
Denver, Colorado air has the highest levels of O3.
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 0.902 μg/m3.
The PM10 concentration in Denver, Colorado is 3.558 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Denver, Colorado is 0.358 ppm.
Currently, Denver, Colorado has a sulfur dioxide (SO2) concentration of 0.116 ppb.
The current ozone (O3) level in Denver, Colorado at the moment is 40.312 ppm.
Nitrogen dioxide (NO2) level in Denver, Colorado at the moment is 6.27 ppb.
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