Hourly Weather Forecast for Gillette, Wyoming

Hourly Weather | Today › Wednesday, August 12, 2026

Active Weather Warnings

Air Quality Alert

Gillette, Wyoming

5 AM

66°

Feels Like 64°

Humidity: 77%

UV Index: 0

Wind: 7 mph

6 AM

66°

Feels Like 64°

Humidity: 77%

UV Index: 0

Wind: 7 mph

7 AM

68°

Feels Like 66°

Humidity: 78%

UV Index: 0

Wind: 7 mph

8 AM

70°

Feels Like 68°

Humidity: 65%

UV Index: 1

Wind: 9 mph

9 AM

73°

Feels Like 72°

Humidity: 62%

UV Index: 1

Wind: 11 mph

10 AM

75°

Feels Like 73°

Humidity: 58%

UV Index: 2

Wind: 11 mph

11 AM

77°

Feels Like 75°

Humidity: 53%

UV Index: 2

Wind: 12 mph

12 PM

79°

Feels Like 77°

Humidity: 49%

UV Index: 3

Wind: 12 mph

1 PM

79°

Feels Like 79°

Humidity: 42%

UV Index: 3

Wind: 12 mph

2 PM

79°

Feels Like 79°

Humidity: 38%

UV Index: 3

Wind: 12 mph

3 PM

77°

Feels Like 72°

Humidity: 43%

UV Index: 2

Wind: 12 mph

4 PM

77°

Feels Like 75°

Humidity: 40%

UV Index: 2

Wind: 12 mph

5 PM

77°

Feels Like 75°

Humidity: 40%

UV Index: 2

Wind: 12 mph

6 PM

75°

Feels Like 73°

Humidity: 41%

UV Index: 1

Wind: 12 mph

7 PM

75°

Feels Like 73°

Humidity: 43%

UV Index: 1

Wind: 12 mph

8 PM

73°

Feels Like 70°

Humidity: 49%

UV Index: 0

Wind: 12 mph

9 PM

70°

Feels Like 66°

Humidity: 58%

UV Index: 0

Wind: 12 mph

10 PM

68°

Feels Like 64°

Humidity: 66%

UV Index: 0

Wind: 11 mph

11 PM

64°

Feels Like 63°

Humidity: 75%

UV Index: 0

Wind: 9 mph

Hourly Air Quality Forecast - AQI (US EPA)

5 AM

48 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.63 µg/m³
PM₁₀: 15.54 µg/m³
O₃: 0.038 ppm
NO₂: 0.7 ppb
SO₂: 0 ppb
CO: 0.12 ppm

Health Recommendations:

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

6 AM

46 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.02 µg/m³
PM₁₀: 15.11 µg/m³
O₃: 0.036 ppm
NO₂: 0.8 ppb
SO₂: 0 ppb
CO: 0.12 ppm

Health Recommendations:

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

7 AM

42 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 10.15 µg/m³
PM₁₀: 14.45 µg/m³
O₃: 0.033 ppm
NO₂: 1 ppb
SO₂: 0 ppb
CO: 0.12 ppm

Health Recommendations:

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

8 AM

39 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 9.47 µg/m³
PM₁₀: 13.99 µg/m³
O₃: 0.032 ppm
NO₂: 1.4 ppb
SO₂: 0 ppb
CO: 0.12 ppm

Health Recommendations:

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

9 AM

39 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 9.25 µg/m³
PM₁₀: 13.97 µg/m³
O₃: 0.032 ppm
NO₂: 1.7 ppb
SO₂: 0 ppb
CO: 0.13 ppm

Health Recommendations:

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

10 AM

39 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 9.46 µg/m³
PM₁₀: 14.44 µg/m³
O₃: 0.043 ppm
NO₂: 0.9 ppb
SO₂: 0.1 ppb
CO: 0.12 ppm

Health Recommendations:

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

11 AM

44 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 10.08 µg/m³
PM₁₀: 15.17 µg/m³
O₃: 0.048 ppm
NO₂: 0.6 ppb
SO₂: 0.1 ppb
CO: 0.12 ppm

Health Recommendations:

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

12 PM

48 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 11.45 µg/m³
PM₁₀: 17 µg/m³
O₃: 0.051 ppm
NO₂: 0.4 ppb
SO₂: 0.1 ppb
CO: 0.12 ppm

Health Recommendations:

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

1 PM

67 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 16.56 µg/m³
PM₁₀: 20.04 µg/m³
O₃: 0.059 ppm
NO₂: 0.4 ppb
SO₂: 0.2 ppb
CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

2 PM

75 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 16.93 µg/m³
PM₁₀: 19.15 µg/m³
O₃: 0.062 ppm
NO₂: 0.4 ppb
SO₂: 0.1 ppb
CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

3 PM

77 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 15.26 µg/m³
PM₁₀: 17.14 µg/m³
O₃: 0.063 ppm
NO₂: 0.4 ppb
SO₂: 0.1 ppb
CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM

80 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 14.02 µg/m³
PM₁₀: 15.82 µg/m³
O₃: 0.064 ppm
NO₂: 0.4 ppb
SO₂: 0.1 ppb
CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM

81 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 13.55 µg/m³
PM₁₀: 15.48 µg/m³
O₃: 0.064 ppm
NO₂: 0.4 ppb
SO₂: 0.1 ppb
CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM

81 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 12.76 µg/m³
PM₁₀: 14.78 µg/m³
O₃: 0.064 ppm
NO₂: 0.4 ppb
SO₂: 0.1 ppb
CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM

77 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 10.82 µg/m³
PM₁₀: 12.77 µg/m³
O₃: 0.063 ppm
NO₂: 0.5 ppb
SO₂: 0.1 ppb
CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 PM

69 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 8.95 µg/m³
PM₁₀: 10.8 µg/m³
O₃: 0.060 ppm
NO₂: 0.5 ppb
SO₂: 0.1 ppb
CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

9 PM

59 AQI

Moderate air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 7.73 µg/m³
PM₁₀: 9.6 µg/m³
O₃: 0.057 ppm
NO₂: 0.4 ppb
SO₂: 0.1 ppb
CO: 0.12 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

10 PM

46 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 6.82 µg/m³
PM₁₀: 9.09 µg/m³
O₃: 0.050 ppm
NO₂: 0.6 ppb
SO₂: 0.1 ppb
CO: 0.12 ppm

Health Recommendations:

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

11 PM

42 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 6.52 µg/m³
PM₁₀: 9.42 µg/m³
O₃: 0.045 ppm
NO₂: 0.8 ppb
SO₂: 0.2 ppb
CO: 0.12 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 Gillette

Air Quality Alert

Air Quality Alert issued August 11 at 10:19AM MDT by NWS Rapid City SD

Aug 11, 10:19 AM → Aug 12, 12:00 PM

The following message is transmitted in collaboration with the
Wyoming Department of Environmental Quality, Air Quality Division,
and the Wyoming Department of Health.

WHAT: Air Quality Alert for Wildfire Smoke.

WHERE: Northeast Wyoming.

WHEN: Through Noon MDT Wednesday.

IMPACTS: Poor air quality due to wildfire smoke.

+ Read More

The Wyoming Department of Health recommends the elderly, young children, and individuals with respiratory problems avoid excessive physical exertion and minimize outdoor activities during this time. Wildfire smoke is made up of a variety of pollutants, including particulate matter and ozone, which can cause respiratory health effect. Although these people are most susceptible to health impacts, the Department of Health also advises that everyone should avoid prolonged exposure to poor air quality conditions.

Updated: Aug 12, 2:44 AM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Pollutant Concentrations:

Health Recommendations:

Weather Alerts and Warnings for Gillette

Air Quality Alert

Explore U.S. Weather Trends