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
2.99 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.20 μg/m³
0
55
155
255
425
605+
37.84 ppb
0
55
71
86
201
201+
0.91 ppb
0
36
76
186
605
1005+
13.46 ppb
0
54
101
361
1250
2050+
0.46 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Denver, Colorado
Denver, Colorado
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AQI 36
Good
2.42μg/m³
PM2.5
10.46μg/m³
PM10
39.46ppb
O3
0.52ppb
SO2
12.86ppb
NO2
0.25ppm
CO
AQI 35
Good
2.45μg/m³
PM2.5
10.61μg/m³
PM10
38.38ppb
O3
0.54ppb
SO2
13.07ppb
NO2
0.24ppm
CO
AQI 35
Good
1.68μg/m³
PM2.5
7.35μg/m³
PM10
38.01ppb
O3
0.54ppb
SO2
12.46ppb
NO2
0.24ppm
CO
AQI 35
Good
2.81μg/m³
PM2.5
11.51μg/m³
PM10
38.35ppb
O3
0.41ppb
SO2
13.00ppb
NO2
0.23ppm
CO
AQI 34
Good
2.68μg/m³
PM2.5
9.32μg/m³
PM10
37.24ppb
O3
0.23ppb
SO2
12.18ppb
NO2
0.22ppm
CO
AQI 40
Good
2.68μg/m³
PM2.5
11.48μg/m³
PM10
42.78ppb
O3
0.58ppb
SO2
12.57ppb
NO2
0.25ppm
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 09:00:00 on 2026-08-16.
In the last 24 hours, the best air quality in Denver, Colorado was observed at 07:00:00 on 2026-08-16.
As of now, the AQI in Denver, Colorado is 35, 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 2.991 μg/m3.
The PM10 concentration in Denver, Colorado is 12.202 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 0.91 ppb.
The current ozone (O3) level in Denver, Colorado at the moment is 37.835 ppm.
Nitrogen dioxide (NO2) level in Denver, Colorado at the moment is 13.459 ppb.
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