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
3.07 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.71 μg/m³
0
55
155
255
425
605+
38.11 ppb
0
55
71
86
201
201+
0.73 ppb
0
36
76
186
605
1005+
11.26 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Denver, Colorado
Denver, Colorado
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AQI 44
Good
3.79μg/m³
PM2.5
11.18μg/m³
PM10
46.56ppb
O3
0.54ppb
SO2
11.12ppb
NO2
0.31ppm
CO
AQI 44
Good
2.81μg/m³
PM2.5
10.30μg/m³
PM10
46.56ppb
O3
0.62ppb
SO2
11.32ppb
NO2
0.30ppm
CO
AQI 43
Good
1.95μg/m³
PM2.5
7.59μg/m³
PM10
45.80ppb
O3
0.55ppb
SO2
10.55ppb
NO2
0.30ppm
CO
AQI 44
Good
3.50μg/m³
PM2.5
11.82μg/m³
PM10
47.20ppb
O3
0.64ppb
SO2
10.50ppb
NO2
0.26ppm
CO
AQI 43
Good
4.26μg/m³
PM2.5
12.74μg/m³
PM10
46.25ppb
O3
0.28ppb
SO2
6.43ppb
NO2
0.26ppm
CO
AQI 42
Good
2.61μg/m³
PM2.5
10.12μg/m³
PM10
44.86ppb
O3
0.52ppb
SO2
9.58ppb
NO2
0.32ppm
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 12:00:00 on 2025-07-21.
In the last 24 hours, the best air quality in Denver, Colorado was observed at 02:00:00 on 2025-07-20.
As of now, the AQI in Denver, Colorado is 43, 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 2.966 μg/m3.
The PM10 concentration in Denver, Colorado is 11.882 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 0.535 ppb.
The current ozone (O3) level in Denver, Colorado at the moment is 46.258 ppm.
Nitrogen dioxide (NO2) level in Denver, Colorado at the moment is 8.877 ppb.
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