Stay updated with real-time air quality in Monument, 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)
23
Good
Monument, Colorado
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.29 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.21 μg/m³
0
55
155
255
425
605+
22.97 ppb
0
55
71
86
201
201+
1.39 ppb
0
36
76
186
605
1005+
23.72 ppb
0
54
101
361
1250
2050+
0.36 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Monument, Colorado
Monument, Colorado
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AQI 25
Good
4.06μg/m³
PM2.5
26.80μg/m³
PM10
24.07ppb
O3
1.38ppb
SO2
23.85ppb
NO2
0.35ppm
CO
AQI 23
Good
3.76μg/m³
PM2.5
22.28μg/m³
PM10
23.55ppb
O3
1.36ppb
SO2
24.06ppb
NO2
0.34ppm
CO
AQI 23
Good
3.59μg/m³
PM2.5
16.27μg/m³
PM10
23.50ppb
O3
1.36ppb
SO2
24.09ppb
NO2
0.34ppm
CO
AQI 23
Good
2.40μg/m³
PM2.5
12.30μg/m³
PM10
25.14ppb
O3
1.43ppb
SO2
24.30ppb
NO2
0.38ppm
CO
AQI 23
Good
3.45μg/m³
PM2.5
18.01μg/m³
PM10
23.64ppb
O3
1.36ppb
SO2
24.02ppb
NO2
0.34ppm
CO
AQI 23
Good
3.48μg/m³
PM2.5
17.98μg/m³
PM10
23.71ppb
O3
1.36ppb
SO2
24.03ppb
NO2
0.34ppm
CO
Air quality data and pollutant measurements for Colorado, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Monument, Colorado is updated every hour.
The worst air quality in Monument, Colorado in the last 24 hours was observed at 10:00:00 on 2026-10-21.
In the last 24 hrs, the best air quality in Monument, Colorado was observed at 05:00:00 on 2026-10-22.
The current air quality in Monument, Colorado is 23, categorized as Good based on real-time data.
The most common pollutant in Monument, Colorado is NO2.
If the air quality in Monument, Colorado is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Monument, Colorado is 2.295 μg/m3.
The current PM10 concentration at Monument, Colorado is 11.215 μg/m3.
The current carbon monoxide (CO) concentration at Monument, Colorado is 0.359 ppm.
The current sulfur dioxide (SO2) concentration at Monument, Colorado is 1.393 ppb.
The current ozone (O3) concentration at Monument, Colorado is 22.97 ppm.
The current nitrogen dioxide (NO2) concentration at Monument, Colorado is 23.718 ppb.
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