Today | Weather | Monday, September 14, 2026

Active Weather Warnings

Weather in Rock Springs, Wyoming

06:37 AM

Now

50° F

Feels Like 43°

Precipitation 13 %

Wind 11 mph

UV Index (0 - 11+) 0

Humidity 50 %

Today

Day 72°

Night 41°

Precipitation 0 %

Wind 16 mph

UV Index (0 - 11+) 6

Rock Springs Weather Forecast Updated

Last updated on September 14, 2026 at 4:58 AM

Air Quality in Rock Springs

NOW

33 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 2.23 µg/m³

PM₁₀ 5.09 µg/m³

O₃ 0.035 ppm

NO₂ 0.5 ppb

SO₂ 0.2 ppb

CO 0.08 ppm

NH₃ 0.66 µg/m³

NO 0 µg/m³

PM_2.5 – 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)

PM_2.5 – 2.23 µg/m³

PM₁₀ – 5.09 µg/m³

O₃ – 69.33 µg/m³

NO₂ – 1.03 µg/m³

SO₂ – 0.41 µg/m³

CO – 87.87 µg/m³

NH₃ – 0.66 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Rock Springs

Severe Future Possible

Fire Weather Watch

Fire Weather Watch issued September 13 at 1:00AM MDT until September 14 at 8:00PM MDT by NWS Riverton WY

Sep 14, 12:00 PM → Sep 14, 8:00 PM

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

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

* AFFECTED AREA:
In Central WY Fire Zones...280...283...289...300.
In Southwest WY Fire Zone....279.

* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In Southwest WY...Sweetwater.

* WIND: West 20 to 30 mph with gusts up to 40 to 45 mph.

* HUMIDITY: As low as 12 percent.

+ 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: Sep 13, 9:21 AM Source: NWS Alert

Severe Expected Likely

Red Flag Warning

Red Flag Warning issued September 14 at 2:51AM MDT until September 14 at 8:00PM MDT by NWS Riverton WY

Sep 14, 12:00 PM → Sep 14, 8:00 PM

* AFFECTED AREA:
In Central WY Fire Zones...280...283...289...300.
In Southwest WY Fire Zone....279.

* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In Southwest WY...Sweetwater.

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

* WIND: West 20 to 30 mph with gusts up to 45 mph.

* HUMIDITY: As low as 10 to 15 percent.

+ 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: Sep 14, 4:57 AM Source: NWS Alert

Weather in Rock Springs, Wyoming

Rock Springs Weather Forecast Updated

Air Quality in Rock Springs

Pollutant Concentrations:

Health Recommendations:

Weather Alerts and Warnings for Rock Springs

Fire Weather Watch

Red Flag Warning

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