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Hourly Weather | Today › Wednesday, February 25, 2026
Active Weather Warnings
Great Falls, Montana
11 PM
Cloudy Night
34°
Feels Like 18°
0
Humidity: 51%
UV Index: 0
Wind: 21 mph

Hourly Air Quality Forecast - AQI (US EPA)

11 PM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.54 µg/m³
  • PM10: 0.59 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.5 ppb
  • SO2: 0 ppb
  • CO: 0.11 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 Great Falls

Severe Expected Likely

High Wind Warning

High Wind Warning issued February 25 at 1:37PM MST until February 25 at 11:00PM MST by NWS Great Falls MT
Feb 25, 1:37 PM → Feb 25, 11:00 PM
WHAT: West and southwest winds 30 to 40 mph with gusts up to 60
mph expected today and 70 mph expected tomorrow.

WHERE: Cascade County, including the Little Belt and Highwood
Mountains, Judith Basin County and Judith Gap, Upper Blackfoot and
MacDonald Pass, Gates of the Mountains, Helena Valley, and Big
Belt, Bridger and Castle Mountains.

WHEN: For the first High Wind Warning, until 11 PM MST this
evening. For the second High Wind Warning, from midnight tonight
to 11 AM MST Friday.

IMPACTS: High winds may move loose debris, damage property and
cause power outages. Travel could be difficult, especially for
high profile vehicles.
+ Read More
People are urged to secure loose objects that could be blown around or damaged by the wind. Monitor the latest forecasts and warnings for updates.
Updated: Feb 25, 4:19 PM Source: NWS Alert
Severe Future Possible

High Wind Watch

High Wind Watch issued February 24 at 1:15PM MST until February 27 at 8:00AM MST by NWS Great Falls MT
Feb 25, 11:00 PM → Feb 27, 8:00 AM
WHAT: For the High Wind Warning, west winds 30 to 40 mph with
gusts up to 70 mph expected. For the High Wind Watch, southwest
winds 30 to 40 mph with gusts up to 70 mph possible.

WHERE: Cascade County, including the Little Belt and Highwood
Mountains, Judith Basin County and Judith Gap, Upper Blackfoot and
MacDonald Pass, Gates of the Mountains, Helena Valley, and Big
Belt, Bridger and Castle Mountains.

WHEN: For the High Wind Warning, from 2 AM to 11 PM MST
Wednesday. For the High Wind Watch, from Wednesday evening through
Friday morning.

IMPACTS: High winds may move loose debris, damage property and
cause power outages. Travel could be difficult, especially for
high profile vehicles.
+ Read More
People are urged to secure loose objects that could be blown around or damaged by the wind. Monitor the latest forecasts and warnings for updates.
Updated: Feb 24, 8:39 PM Source: NWS Alert