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
4.72 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
20.73 μg/m³
0
55
155
255
425
605+
19.68 ppb
0
55
71
86
201
201+
0.11 ppb
0
36
76
186
605
1005+
14.09 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
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AQI 33
Good
5.59μg/m³
PM2.5
23.79μg/m³
PM10
16.32ppb
O3
0.76ppb
SO2
20.57ppb
NO2
0.35ppm
CO
AQI 33
Good
5.70μg/m³
PM2.5
25.34μg/m³
PM10
14.13ppb
O3
0.79ppb
SO2
25.63ppb
NO2
0.32ppm
CO
AQI 33
Good
5.79μg/m³
PM2.5
25.29μg/m³
PM10
16.87ppb
O3
0.87ppb
SO2
26.61ppb
NO2
0.32ppm
CO
AQI 27
Good
5.44μg/m³
PM2.5
24.94μg/m³
PM10
12.85ppb
O3
0.73ppb
SO2
22.91ppb
NO2
0.29ppm
CO
AQI 27
Good
4.98μg/m³
PM2.5
24.74μg/m³
PM10
15.61ppb
O3
0.76ppb
SO2
14.76ppb
NO2
0.28ppm
CO
AQI 38
Good
6.58μg/m³
PM2.5
29.03μg/m³
PM10
12.94ppb
O3
0.78ppb
SO2
23.97ppb
NO2
0.37ppm
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 05:00:00 on 2026-01-22.
In the last 24 hours, the best air quality in Denver, Colorado was observed at 08:00:00 on 2026-01-22.
As of now, the AQI in Denver, Colorado is 33, 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 6.076 μg/m3.
The PM10 concentration in Denver, Colorado is 27.321 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Denver, Colorado is 0.457 ppm.
Currently, Denver, Colorado has a sulfur dioxide (SO2) concentration of 0.708 ppb.
The current ozone (O3) level in Denver, Colorado at the moment is 13.145 ppm.
Nitrogen dioxide (NO2) level in Denver, Colorado at the moment is 25.792 ppb.
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