Stay updated with real-time air quality in Cheyenne, Wyoming 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)
42
Good
Cheyenne, Wyoming
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.95 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
8.00 μg/m³
0
55
155
255
425
605+
44.76 ppb
0
55
71
86
201
201+
0.05 ppb
0
36
76
186
605
1005+
1.29 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Cheyenne, Wyoming
Cheyenne, Wyoming
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AQI 39
Good
2.99μg/m³
PM2.5
12.57μg/m³
PM10
41.78ppb
O3
0.10ppb
SO2
2.44ppb
NO2
0.14ppm
CO
AQI 35
Good
4.64μg/m³
PM2.5
19.96μg/m³
PM10
38.04ppb
O3
0.14ppb
SO2
2.79ppb
NO2
0.14ppm
CO
AQI 46
Good
2.28μg/m³
PM2.5
9.00μg/m³
PM10
50.17ppb
O3
0.02ppb
SO2
0.66ppb
NO2
0.13ppm
CO
AQI 40
Good
2.50μg/m³
PM2.5
10.17μg/m³
PM10
43.03ppb
O3
0.18ppb
SO2
4.09ppb
NO2
0.15ppm
CO
AQI 37
Good
2.85μg/m³
PM2.5
11.75μg/m³
PM10
40.30ppb
O3
0.19ppb
SO2
4.20ppb
NO2
0.15ppm
CO
AQI 39
Good
2.74μg/m³
PM2.5
11.02μg/m³
PM10
42.02ppb
O3
0.20ppb
SO2
4.52ppb
NO2
0.15ppm
CO
Air quality data and pollutant measurements for Wyoming, 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 Cheyenne, Wyoming is updated every hour.
The worst air quality in Cheyenne, Wyoming in the last 24 hours was observed at 12:00:00 on 2026-04-23.
In the last 24 hrs, the best air quality in Cheyenne, Wyoming was observed at 01:00:00 on 2026-04-24.
The current air quality in Cheyenne, Wyoming is 42, categorized as Good based on real-time data.
The most common pollutant in Cheyenne, Wyoming is O3.
If the air quality in Cheyenne, Wyoming is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Cheyenne, Wyoming is 1.953 μg/m3.
The current PM10 concentration at Cheyenne, Wyoming is 8 μg/m3.
The current carbon monoxide (CO) concentration at Cheyenne, Wyoming is 0.136 ppm.
The current sulfur dioxide (SO2) concentration at Cheyenne, Wyoming is 0.049 ppb.
The current ozone (O3) concentration at Cheyenne, Wyoming is 44.758 ppm.
The current nitrogen dioxide (NO2) concentration at Cheyenne, Wyoming is 1.286 ppb.
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