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)
49
Good
Denver, Colorado
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
9.41 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
40.11 μg/m³
0
55
155
255
425
605+
42.11 ppb
0
55
71
86
201
201+
0.54 ppb
0
36
76
186
605
1005+
12.49 ppb
0
54
101
361
1250
2050+
0.39 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Denver, Colorado
Denver, Colorado
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AQI 39
Good
7.36μg/m³
PM2.5
21.24μg/m³
PM10
42.09ppb
O3
0.63ppb
SO2
12.29ppb
NO2
0.34ppm
CO
AQI 49
Good
9.31μg/m³
PM2.5
34.67μg/m³
PM10
42.30ppb
O3
0.65ppb
SO2
13.86ppb
NO2
0.35ppm
CO
AQI 49
Good
9.01μg/m³
PM2.5
33.92μg/m³
PM10
42.05ppb
O3
0.62ppb
SO2
14.47ppb
NO2
0.35ppm
CO
AQI 52
Moderate
9.92μg/m³
PM2.5
35.13μg/m³
PM10
42.90ppb
O3
0.69ppb
SO2
11.64ppb
NO2
0.33ppm
CO
AQI 49
Good
8.58μg/m³
PM2.5
23.31μg/m³
PM10
43.79ppb
O3
0.62ppb
SO2
6.62ppb
NO2
0.32ppm
CO
AQI 38
Good
7.06μg/m³
PM2.5
28.00μg/m³
PM10
40.93ppb
O3
0.59ppb
SO2
13.81ppb
NO2
0.34ppm
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 08:00:00 on 2025-06-05.
In the last 24 hours, the best air quality in Denver, Colorado was observed at 05:00:00 on 2025-06-06.
As of now, the AQI in Denver, Colorado is 49, 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 9.408 μg/m3.
The PM10 concentration in Denver, Colorado is 40.113 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Denver, Colorado is 0.385 ppm.
Currently, Denver, Colorado has a sulfur dioxide (SO2) concentration of 0.542 ppb.
The current ozone (O3) level in Denver, Colorado at the moment is 42.114 ppm.
Nitrogen dioxide (NO2) level in Denver, Colorado at the moment is 12.494 ppb.
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