Hourly Weather | Today Tuesday, January 6, 2026
Active Weather Warnings
Great Falls, Montana
11 PM
Cloudy Night
39°
Feels Like 21°
0
Humidity: 59%
Wind: 24 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.5 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Great Falls

Severe Future Possible

High Wind Watch

High Wind Watch issued January 4 at 1:09PM MST until January 6 at 11:00PM MST by NWS Great Falls MT
Jan 6, 8:00 AM Jan 6, 11:00 PM
WHAT: Southwest winds 25 to 40 mph with gusts up to 60 mph
possible.

WHERE: Cascade County below 5000ft and Judith Basin County and
Judith Gap.

WHEN: From Tuesday morning through Tuesday evening.

IMPACTS: High winds may move loose debris, damage property and
cause power outages. Travel could be difficult, especially for
high profile vehicles.

ADDITIONAL DETAILS: The strongest winds are most likely during
the late morning and afternoon hours on Tuesday. Another round of
strong winds is likely on Wednesday.
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Monitor the latest forecasts and warnings for updates. Remember, a High Wind Watch means that there is at least a 50% chance of 40 mph sustained winds or 58 mph wind gusts occurring during the watch period.
Updated: Jan 4, 9:56 PM Source: NWS Alert
Severe Expected Likely

High Wind Warning

High Wind Warning issued January 6 at 1:04PM MST until January 6 at 11:00PM MST by NWS Great Falls MT
Jan 6, 1:04 PM Jan 6, 11:00 PM
WHAT: Southwest winds 30 to 40 mph with gusts up to 65 mph.

WHERE: Cascade County below 5000ft and Judith Basin County and
Judith Gap.

WHEN: Until 11 PM MST this evening.

IMPACTS: Travel could be difficult, especially for high profile
vehicles.

ADDITIONAL DETAILS: Another period of gusty winds is likely to
follow during the day Wednesday. However, winds won't be as strong
as today.
+ Read More
People are urged to secure loose objects that could be blown around or damaged by the wind.
Updated: Jan 6, 6:26 PM Source: NWS Alert