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)
26
Good
Cheyenne, Wyoming
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.16 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.26 μg/m³
0
55
155
255
425
605+
28.07 ppb
0
55
71
86
201
201+
1.00 ppb
0
36
76
186
605
1005+
6.38 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Cheyenne, Wyoming
Cheyenne, Wyoming
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AQI 27
Good
5.30μg/m³
PM2.5
23.21μg/m³
PM10
28.53ppb
O3
0.84ppb
SO2
8.45ppb
NO2
0.22ppm
CO
AQI 27
Good
4.72μg/m³
PM2.5
20.76μg/m³
PM10
28.55ppb
O3
0.85ppb
SO2
11.54ppb
NO2
0.20ppm
CO
AQI 29
Good
2.50μg/m³
PM2.5
10.47μg/m³
PM10
30.72ppb
O3
0.89ppb
SO2
1.42ppb
NO2
0.23ppm
CO
AQI 26
Good
4.08μg/m³
PM2.5
18.00μg/m³
PM10
28.00ppb
O3
0.85ppb
SO2
8.80ppb
NO2
0.22ppm
CO
AQI 26
Good
3.98μg/m³
PM2.5
17.71μg/m³
PM10
28.18ppb
O3
0.85ppb
SO2
5.38ppb
NO2
0.22ppm
CO
AQI 26
Good
4.12μg/m³
PM2.5
18.08μg/m³
PM10
27.53ppb
O3
0.85ppb
SO2
19.92ppb
NO2
0.21ppm
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 11:00:00 on 2026-10-21.
In the last 24 hrs, the best air quality in Cheyenne, Wyoming was observed at 10:00:00 on 2026-10-22.
The current air quality in Cheyenne, Wyoming is 26, 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 2.16 μg/m3.
The current PM10 concentration at Cheyenne, Wyoming is 10.258 μg/m3.
The current carbon monoxide (CO) concentration at Cheyenne, Wyoming is 0.104 ppm.
The current sulfur dioxide (SO2) concentration at Cheyenne, Wyoming is 1.003 ppb.
The current ozone (O3) concentration at Cheyenne, Wyoming is 28.067 ppm.
The current nitrogen dioxide (NO2) concentration at Cheyenne, Wyoming is 6.381 ppb.
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