Hourly Weather Forecast for Cheyenne, Wyoming

Hourly Weather | Today › Thursday, June 11, 2026

Active Weather Warnings

Red Flag Warning

Cheyenne, Wyoming

11 AM

61°

Feels Like 61°

Humidity: 19%

UV Index: 8

Wind: 21 mph

12 PM

63°

Feels Like 64°

Humidity: 19%

UV Index: 11

Wind: 21 mph

1 PM

66°

Feels Like 70°

Humidity: 18%

UV Index: 11

Wind: 21 mph

2 PM

70°

Feels Like 72°

Humidity: 16%

UV Index: 11

Wind: 20 mph

3 PM

70°

Feels Like 72°

Humidity: 15%

UV Index: 8

Wind: 18 mph

4 PM

72°

Feels Like 72°

Humidity: 14%

UV Index: 5

Wind: 18 mph

5 PM

73°

Feels Like 73°

Humidity: 12%

UV Index: 4

Wind: 17 mph

6 PM

72°

Feels Like 70°

Humidity: 13%

UV Index: 2

Wind: 16 mph

7 PM

70°

Feels Like 66°

Humidity: 14%

UV Index: 1

Wind: 14 mph

8 PM

68°

Feels Like 64°

Humidity: 16%

UV Index: 0

Wind: 10 mph

9 PM

64°

Feels Like 61°

Humidity: 21%

UV Index: 0

Wind: 9 mph

10 PM

61°

Feels Like 57°

Humidity: 25%

UV Index: 0

Wind: 9 mph

11 PM

57°

Feels Like 54°

Humidity: 30%

UV Index: 0

Wind: 9 mph

Hourly Air Quality Forecast - AQI (US EPA)

11 AM

44 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.85 µg/m³
PM₁₀: 1.82 µg/m³
O₃: 0.048 ppm
NO₂: 0.2 ppb
SO₂: 0.3 ppb
CO: 0.06 ppm

Health Recommendations:

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

12 PM

46 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.9 µg/m³
PM₁₀: 1.7 µg/m³
O₃: 0.050 ppm
NO₂: 0.2 ppb
SO₂: 0.3 ppb
CO: 0.06 ppm

Health Recommendations:

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

1 PM

49 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.88 µg/m³
PM₁₀: 1.49 µg/m³
O₃: 0.053 ppm
NO₂: 0.1 ppb
SO₂: 0.3 ppb
CO: 0.06 ppm

Health Recommendations:

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

2 PM

50 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.83 µg/m³
PM₁₀: 1.28 µg/m³
O₃: 0.054 ppm
NO₂: 0.1 ppb
SO₂: 0.2 ppb
CO: 0.06 ppm

Health Recommendations:

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

3 PM

50 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.88 µg/m³
PM₁₀: 1.26 µg/m³
O₃: 0.054 ppm
NO₂: 0.2 ppb
SO₂: 0.2 ppb
CO: 0.06 ppm

Health Recommendations:

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

4 PM

50 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1 µg/m³
PM₁₀: 1.36 µg/m³
O₃: 0.054 ppm
NO₂: 0.2 ppb
SO₂: 0.3 ppb
CO: 0.06 ppm

Health Recommendations:

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

5 PM

49 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.18 µg/m³
PM₁₀: 1.54 µg/m³
O₃: 0.053 ppm
NO₂: 0.3 ppb
SO₂: 0.3 ppb
CO: 0.06 ppm

Health Recommendations:

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

6 PM

49 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.36 µg/m³
PM₁₀: 1.73 µg/m³
O₃: 0.053 ppm
NO₂: 0.5 ppb
SO₂: 0.3 ppb
CO: 0.06 ppm

Health Recommendations:

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

7 PM

47 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.49 µg/m³
PM₁₀: 1.9 µg/m³
O₃: 0.050 ppm
NO₂: 0.9 ppb
SO₂: 0.3 ppb
CO: 0.07 ppm

Health Recommendations:

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

8 PM

42 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.59 µg/m³
PM₁₀: 2.07 µg/m³
O₃: 0.045 ppm
NO₂: 1.7 ppb
SO₂: 0.3 ppb
CO: 0.07 ppm

Health Recommendations:

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

9 PM

39 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.68 µg/m³
PM₁₀: 2.23 µg/m³
O₃: 0.042 ppm
NO₂: 2.2 ppb
SO₂: 0.2 ppb
CO: 0.08 ppm

Health Recommendations:

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

10 PM

37 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.74 µg/m³
PM₁₀: 2.37 µg/m³
O₃: 0.040 ppm
NO₂: 2.3 ppb
SO₂: 0.2 ppb
CO: 0.08 ppm

Health Recommendations:

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

11 PM

36 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.82 µg/m³
PM₁₀: 2.52 µg/m³
O₃: 0.039 ppm
NO₂: 2.5 ppb
SO₂: 0.2 ppb
CO: 0.08 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Cheyenne

Severe Expected Likely

Red Flag Warning

Red Flag Warning issued June 11 at 12:59AM MDT until June 12 at 8:00PM MDT by NWS Cheyenne WY

Jun 11, 12:59 AM → Jun 12, 8:00 PM

...RED FLAG WARNING WAS EXTENDED DUE GUSTY WINDS AND LOW RH
THROUGH FRIDAY EVENING....

* WIND...West to northwest winds 15 to 30 MPH with gusts up to 40
MPH.

* HUMIDITY...10 to 20 percent Thursday. 6 to 12 percent Friday.

IMPACTS: Any fires that develop will likely spread rapidly.
Outdoor burning is not recommended.

+ Read More

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.

Updated: Jun 11, 10:14 AM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

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Weather Alerts and Warnings for Cheyenne

Red Flag Warning

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