Air Quality in Cheyenne, United States
Windy
32.9°C · 7.2% humidity
32.9°
Feels 32.9°
61
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station
Nearby Monitoring Stations
Cheyenne's air quality — share it
AQI Forecast
27
4pm
27
27
61
7pm
51
44
47
10pm
36
33
32
1am
30
29
29
4am
28
28
28
7am
27
27
27
10am
27
27
27
1pm
27
27
Air Quality Index Trend
17h · 1 stnCheyenne's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Cheyenne is 1.1× the WHO 24-hour guideline of 15 µg/m³.
7.2%
Humidity
44.7 km/h
Wind NW
1009.5 hPa
Pressure
10.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
16.9 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Cheyenne?
Temperature & Precipitation
PM2.5 Trend
17h · 1 stationPM2.516.9 µg/m³
×1.1 WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX10.9
Extreme
Station readings (1 station within 25 km)
16.9
Median
16.9
Average
16.9
Low
16.9
High
PM2.5 µg/m³ · Model: 10.0 · Bias: -6.9
What is the 7-day forecast for Cheyenne?
08-03
32.9° 17.3°
0.13 mm
08-04
25.6° 16.3°
0.13 mm
08-05
33.1° 15.0°
0.13 mm
08-06
30.7° 14.0°
0.69 mm
08-07
30.4° 17.4°
08-08
32.4° 15.2°
0.25 mm
08-09
30.7° 19.2°
0.44 mm
Both models agree
Avg diff: 2.9°C
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T01:01 UTC.