Hourly Weather Forecast for Rock Springs, Wyoming

Hourly Weather | Today › Wednesday, March 18, 2026

Active Weather Warnings

Fire Weather Watch
Red Flag Warning
High Wind Warning

Rock Springs, Wyoming

6 AM

43°

Feels Like 41°

Humidity: 45%

UV Index: 0

Wind: 6 mph

7 AM

45°

Feels Like 37°

Humidity: 44%

UV Index: 0

Wind: 9 mph

8 AM

46°

Feels Like 43°

Humidity: 43%

UV Index: 1

Wind: 8 mph

9 AM

48°

Feels Like 46°

Humidity: 42%

UV Index: 2

Wind: 9 mph

10 AM

54°

Feels Like 52°

Humidity: 34%

UV Index: 3

Wind: 12 mph

11 AM

59°

Feels Like 57°

Humidity: 28%

UV Index: 4

Wind: 16 mph

12 PM

63°

Feels Like 61°

Humidity: 23%

UV Index: 5

Wind: 21 mph

1 PM

66°

Feels Like 66°

Humidity: 19%

UV Index: 5

Wind: 23 mph

2 PM

70°

Feels Like 68°

Humidity: 16%

UV Index: 5

Wind: 24 mph

3 PM

72°

Feels Like 70°

Humidity: 14%

UV Index: 4

Wind: 25 mph

4 PM

73°

Feels Like 72°

Humidity: 13%

UV Index: 3

Wind: 25 mph

5 PM

72°

Feels Like 68°

Humidity: 14%

UV Index: 2

Wind: 24 mph

6 PM

68°

Feels Like 64°

Humidity: 15%

UV Index: 1

Wind: 22 mph

7 PM

64°

Feels Like 61°

Humidity: 18%

UV Index: 0

Wind: 17 mph

8 PM

61°

Feels Like 57°

Humidity: 21%

UV Index: 0

Wind: 12 mph

9 PM

57°

Feels Like 54°

Humidity: 25%

UV Index: 0

Wind: 9 mph

10 PM

55°

Feels Like 50°

Humidity: 28%

UV Index: 0

Wind: 9 mph

11 PM

52°

Feels Like 48°

Humidity: 30%

UV Index: 0

Wind: 9 mph

Hourly Air Quality Forecast - AQI (US EPA)

6 AM

36 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.87 µg/m³
PM₁₀: 1.51 µg/m³
O₃: 0.039 ppm
NO₂: 0.4 ppb
SO₂: 0 ppb
CO: 0.09 ppm

Health Recommendations:

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

7 AM

35 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.86 µg/m³
PM₁₀: 1.47 µg/m³
O₃: 0.038 ppm
NO₂: 0.4 ppb
SO₂: 0 ppb
CO: 0.09 ppm

Health Recommendations:

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

8 AM

34 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.85 µg/m³
PM₁₀: 1.46 µg/m³
O₃: 0.037 ppm
NO₂: 0.6 ppb
SO₂: 0 ppb
CO: 0.09 ppm

Health Recommendations:

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

9 AM

33 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.86 µg/m³
PM₁₀: 1.48 µg/m³
O₃: 0.036 ppm
NO₂: 0.8 ppb
SO₂: 0 ppb
CO: 0.09 ppm

Health Recommendations:

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

10 AM

32 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.91 µg/m³
PM₁₀: 1.6 µg/m³
O₃: 0.035 ppm
NO₂: 0.8 ppb
SO₂: 0 ppb
CO: 0.09 ppm

Health Recommendations:

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

11 AM

32 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.97 µg/m³
PM₁₀: 1.78 µg/m³
O₃: 0.035 ppm
NO₂: 0.7 ppb
SO₂: 0 ppb
CO: 0.09 ppm

Health Recommendations:

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

12 PM

33 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.09 µg/m³
PM₁₀: 2.03 µg/m³
O₃: 0.036 ppm
NO₂: 0.5 ppb
SO₂: 0 ppb
CO: 0.09 ppm

Health Recommendations:

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

1 PM

40 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.98 µg/m³
PM₁₀: 2.04 µg/m³
O₃: 0.043 ppm
NO₂: 0.2 ppb
SO₂: 0 ppb
CO: 0.08 ppm

Health Recommendations:

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

2 PM

41 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.94 µg/m³
PM₁₀: 1.96 µg/m³
O₃: 0.045 ppm
NO₂: 0.1 ppb
SO₂: 0 ppb
CO: 0.08 ppm

Health Recommendations:

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

3 PM

42 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.94 µg/m³
PM₁₀: 1.95 µg/m³
O₃: 0.045 ppm
NO₂: 0.1 ppb
SO₂: 0 ppb
CO: 0.08 ppm

Health Recommendations:

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

4 PM

43 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.97 µg/m³
PM₁₀: 1.93 µg/m³
O₃: 0.046 ppm
NO₂: 0.1 ppb
SO₂: 0 ppb
CO: 0.08 ppm

Health Recommendations:

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

5 PM

43 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1 µg/m³
PM₁₀: 1.86 µg/m³
O₃: 0.047 ppm
NO₂: 0.2 ppb
SO₂: 0 ppb
CO: 0.08 ppm

Health Recommendations:

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

6 PM

44 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.06 µg/m³
PM₁₀: 1.75 µg/m³
O₃: 0.047 ppm
NO₂: 0.2 ppb
SO₂: 0.1 ppb
CO: 0.08 ppm

Health Recommendations:

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

7 PM

43 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.14 µg/m³
PM₁₀: 1.72 µg/m³
O₃: 0.047 ppm
NO₂: 0.4 ppb
SO₂: 0.1 ppb
CO: 0.08 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: 1.32 µg/m³
PM₁₀: 1.84 µg/m³
O₃: 0.046 ppm
NO₂: 0.6 ppb
SO₂: 0.1 ppb
CO: 0.08 ppm

Health Recommendations:

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

9 PM

42 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.57 µg/m³
PM₁₀: 2.09 µg/m³
O₃: 0.045 ppm
NO₂: 0.6 ppb
SO₂: 0.1 ppb
CO: 0.08 ppm

Health Recommendations:

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

10 PM

40 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.79 µg/m³
PM₁₀: 2.34 µg/m³
O₃: 0.043 ppm
NO₂: 0.7 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

38 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 1.96 µg/m³
PM₁₀: 2.56 µg/m³
O₃: 0.041 ppm
NO₂: 0.8 ppb
SO₂: 0.2 ppb
CO: 0.09 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 Rock Springs

Severe Future Possible

Fire Weather Watch

Fire Weather Watch issued March 17 at 2:23AM MDT until March 21 at 9:00PM MDT by NWS Riverton WY

Mar 18, 12:00 PM → Mar 21, 9:00 PM

The National Weather Service in Riverton has issued a Fire Weather
Watch, which is in effect from Wednesday afternoon through
Saturday evening.

* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.

* AFFECTED AREA:
In Southwest WY Fire Zones...277...279.
In West Central WY Fire Zone....278.

* COUNTIES AFFECTED:
In Southwest WY...Sweetwater...Uinta.
In West Central WY...Lincoln...Sublette.

* WIND: West 15 to 25 mph with gusts up to 40 mph. The strongest
wind is expected on Wednesday and Saturday.

* HUMIDITY: 10 to 15 percent.

* TEMPERATURES: Highs around 70 on Wednesday. Highs in the 70s
Thursday through Saturday.

+ Read More

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.

Updated: Mar 17, 11:34 AM Source: NWS Alert

Severe Expected Likely

Red Flag Warning

Red Flag Warning issued March 18 at 1:55AM MDT until March 21 at 9:00PM MDT by NWS Riverton WY

Mar 18, 12:00 PM → Mar 21, 9:00 PM

* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.

* AFFECTED AREA:
In Southwest WY Fire Zones...277...279.
In West Central WY Fire Zone....278.

* COUNTIES AFFECTED:
In Southwest WY...Sweetwater...Uinta.
In West Central WY...Lincoln...Sublette.

* WIND: West 15 to 25 mph with gusts up to 40 mph with the
strongest wind today and Saturday.

* HUMIDITY: 10 to 15 percent.

* TEMPERATURES: Highs around 70 Wednesday, in the 70s Thursday
through Saturday.

+ 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: Mar 18, 5:20 AM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

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Weather Alerts and Warnings for Rock Springs

Fire Weather Watch

Red Flag Warning

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