Today | Weather | Sunday, October 26, 2025

Weather in Cheyenne, Wyoming

08:08 AM
Now
Cloudy Weather
46° F
Feels Like 43°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 0
Humidity 45 %
Today
Cloudy Weather
Day 63°
Night 39°
Precipitation 25 %
Wind 9 mph
UV Index (0 - 11+) 1

Cheyenne Weather Forecast Updated

56 minutes ago
Last updated on

Air Quality in Cheyenne

NOW
32 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.39 µg/m³
PM10 1.55 µg/m³
O3 0.035 ppm
NO2 0.5 ppb
SO2 0 ppb
CO 0.07 ppm
NH3 0.2 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.51.39 µg/m³
PM101.55 µg/m³
O368.78 µg/m³
NO20.86 µg/m³
SO20.11 µg/m³
CO77.37 µg/m³
NH30.2 µg/m³
NO0 µg/m³