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)
30
Good
Denver, Colorado
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.12 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
21.86 μg/m³
0
55
155
255
425
605+
32.27 ppb
0
55
71
86
201
201+
0.46 ppb
0
36
76
186
605
1005+
15.43 ppb
0
54
101
361
1250
2050+
0.30 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Denver, Colorado
Denver, Colorado
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AQI 29
Good
5.00μg/m³
PM2.5
13.73μg/m³
PM10
31.38ppb
O3
0.38ppb
SO2
12.57ppb
NO2
0.25ppm
CO
AQI 33
Good
6.38μg/m³
PM2.5
24.82μg/m³
PM10
34.08ppb
O3
0.40ppb
SO2
12.92ppb
NO2
0.25ppm
CO
AQI 33
Good
6.39μg/m³
PM2.5
24.90μg/m³
PM10
34.65ppb
O3
0.40ppb
SO2
13.30ppb
NO2
0.26ppm
CO
AQI 33
Good
6.20μg/m³
PM2.5
22.89μg/m³
PM10
32.05ppb
O3
0.39ppb
SO2
12.44ppb
NO2
0.23ppm
CO
AQI 33
Good
6.05μg/m³
PM2.5
17.46μg/m³
PM10
26.20ppb
O3
0.32ppb
SO2
13.36ppb
NO2
0.23ppm
CO
AQI 33
Good
4.98μg/m³
PM2.5
20.71μg/m³
PM10
36.08ppb
O3
0.40ppb
SO2
12.80ppb
NO2
0.26ppm
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 10:00:00 on 2026-01-18.
In the last 24 hours, the best air quality in Denver, Colorado was observed at 03:00:00 on 2026-01-19.
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 6.176 μg/m3.
The PM10 concentration in Denver, Colorado is 26.758 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Denver, Colorado is 0.286 ppm.
Currently, Denver, Colorado has a sulfur dioxide (SO2) concentration of 0.399 ppb.
The current ozone (O3) level in Denver, Colorado at the moment is 33.693 ppm.
Nitrogen dioxide (NO2) level in Denver, Colorado at the moment is 10.199 ppb.
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