Stay updated with real-time air quality in Castle Pines, 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)
38
Good
Castle Pines, Colorado
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.58 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
20.32 μg/m³
0
55
155
255
425
605+
39.79 ppb
0
55
71
86
201
201+
0.62 ppb
0
36
76
186
605
1005+
13.41 ppb
0
54
101
361
1250
2050+
0.32 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Castle Pines, Colorado
Castle Pines, Colorado
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AQI 38
Good
6.88μg/m³
PM2.5
18.82μg/m³
PM10
34.72ppb
O3
0.50ppb
SO2
11.43ppb
NO2
0.30ppm
CO
AQI 38
Good
6.87μg/m³
PM2.5
17.03μg/m³
PM10
33.45ppb
O3
0.51ppb
SO2
11.22ppb
NO2
0.29ppm
CO
AQI 34
Good
4.35μg/m³
PM2.5
14.07μg/m³
PM10
36.92ppb
O3
0.54ppb
SO2
10.09ppb
NO2
0.27ppm
CO
AQI 38
Good
6.91μg/m³
PM2.5
18.62μg/m³
PM10
34.37ppb
O3
0.50ppb
SO2
11.40ppb
NO2
0.29ppm
CO
AQI 38
Good
5.24μg/m³
PM2.5
7.59μg/m³
PM10
40.67ppb
O3
0.53ppb
SO2
10.97ppb
NO2
0.27ppm
CO
AQI 35
Good
5.25μg/m³
PM2.5
7.58μg/m³
PM10
38.47ppb
O3
0.53ppb
SO2
10.92ppb
NO2
0.27ppm
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 Castle Pines, Colorado is updated every hour.
The worst air quality in Castle Pines, Colorado in the last 24 hours was observed at 07:00:00 on 2025-06-05.
In the last 24 hrs, the best air quality in Castle Pines, Colorado was observed at 01:00:00 on 2025-06-06.
The current air quality in Castle Pines, Colorado is 38, categorized as Good based on real-time data.
The most common pollutant in Castle Pines, Colorado is PM2.5.
If the air quality in Castle Pines, Colorado is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Castle Pines, Colorado is 6.577 μg/m3.
The current PM10 concentration at Castle Pines, Colorado is 20.319 μg/m3.
The current carbon monoxide (CO) concentration at Castle Pines, Colorado is 0.32 ppm.
The current sulfur dioxide (SO2) concentration at Castle Pines, Colorado is 0.62 ppb.
The current ozone (O3) concentration at Castle Pines, Colorado is 39.787 ppm.
The current nitrogen dioxide (NO2) concentration at Castle Pines, Colorado is 13.414 ppb.
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