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)
35
Good
Denver, Colorado
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.30 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.88 μg/m³
0
55
155
255
425
605+
37.99 ppb
0
55
71
86
201
201+
0.26 ppb
0
36
76
186
605
1005+
5.91 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Denver, Colorado
Denver, Colorado
Scroll To Air Quality MapLoading...
AQI 32
Good
2.35μg/m³
PM2.5
10.84μg/m³
PM10
34.57ppb
O3
0.38ppb
SO2
15.26ppb
NO2
0.30ppm
CO
AQI 32
Good
2.16μg/m³
PM2.5
8.78μg/m³
PM10
34.63ppb
O3
0.37ppb
SO2
16.26ppb
NO2
0.30ppm
CO
AQI 34
Good
1.51μg/m³
PM2.5
6.13μg/m³
PM10
37.07ppb
O3
0.40ppb
SO2
15.62ppb
NO2
0.29ppm
CO
AQI 31
Good
2.43μg/m³
PM2.5
10.51μg/m³
PM10
32.65ppb
O3
0.46ppb
SO2
15.26ppb
NO2
0.26ppm
CO
AQI 28
Good
2.47μg/m³
PM2.5
13.35μg/m³
PM10
29.75ppb
O3
0.66ppb
SO2
11.70ppb
NO2
0.26ppm
CO
AQI 31
Good
2.68μg/m³
PM2.5
11.93μg/m³
PM10
34.10ppb
O3
0.37ppb
SO2
15.77ppb
NO2
0.31ppm
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 2025-11-08.
In the last 24 hours, the best air quality in Denver, Colorado was observed at 11:00:00 on 2025-11-08.
As of now, the AQI in Denver, Colorado is 31, 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 2.53 μg/m3.
The PM10 concentration in Denver, Colorado is 10.263 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Denver, Colorado is 0.371 ppm.
Currently, Denver, Colorado has a sulfur dioxide (SO2) concentration of 0.246 ppb.
The current ozone (O3) level in Denver, Colorado at the moment is 33.936 ppm.
Nitrogen dioxide (NO2) level in Denver, Colorado at the moment is 12.143 ppb.
All Rights Reserved © Ambee Inc. 2025