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Today Hourly 7 days 30 days Air Quality
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Hourly Weather | Today › Thursday, February 26, 2026
Active Weather Warnings
Great Falls, Montana
1 AM
Cloudy Night
34°
Feels Like 16°
0
Humidity: 49%
UV Index: 0
Wind: 23 mph
2 AM
Cloudy Night
34°
Feels Like 16°
0
Humidity: 48%
UV Index: 0
Wind: 24 mph
3 AM
Cloudy Night
34°
Feels Like 16°
0
Humidity: 47%
UV Index: 0
Wind: 25 mph
4 AM
Cloudy Night
34°
Feels Like 16°
0
Humidity: 48%
UV Index: 0
Wind: 27 mph
5 AM
Cloudy Weather
34°
Feels Like 16°
0
Humidity: 47%
UV Index: 0
Wind: 27 mph
6 AM
Cloudy Weather
34°
Feels Like 16°
0
Humidity: 46%
UV Index: 0
Wind: 27 mph
7 AM
Cloudy Night
36°
Feels Like 16°
0
Humidity: 43%
UV Index: 0
Wind: 27 mph
8 AM
Cloudy Weather
36°
Feels Like 18°
0
Humidity: 42%
UV Index: 1
Wind: 27 mph
9 AM
Cloudy Weather
39°
Feels Like 21°
0
Humidity: 37%
UV Index: 2
Wind: 30 mph
10 AM
Cloudy Weather
41°
Feels Like 25°
0
Humidity: 34%
UV Index: 2
Wind: 34 mph
11 AM
Cloudy Weather
45°
Feels Like 30°
0
Humidity: 30%
UV Index: 2
Wind: 35 mph
12 PM
Cloudy Weather
46°
Feels Like 32°
0
Humidity: 27%
UV Index: 2
Wind: 35 mph
1 PM
Cloudy Weather
46°
Feels Like 34°
0
Humidity: 25%
UV Index: 2
Wind: 35 mph
2 PM
Cloudy Weather
48°
Feels Like 34°
0
Humidity: 25%
UV Index: 2
Wind: 35 mph
3 PM
Cloudy Weather
48°
Feels Like 36°
0
Humidity: 24%
UV Index: 2
Wind: 34 mph
4 PM
Cloudy Weather
50°
Feels Like 37°
0
Humidity: 22%
UV Index: 1
Wind: 32 mph
5 PM
Cloudy Weather
48°
Feels Like 34°
0
Humidity: 25%
UV Index: 0
Wind: 31 mph
6 PM
Cloudy Weather
45°
Feels Like 30°
0
Humidity: 27%
UV Index: 0
Wind: 29 mph
7 PM
Cloudy Night
43°
Feels Like 27°
0
Humidity: 29%
UV Index: 0
Wind: 27 mph
8 PM
Cloudy Weather
41°
Feels Like 27°
0
Humidity: 29%
UV Index: 0
Wind: 25 mph
9 PM
Cloudy Night
41°
Feels Like 27°
0
Humidity: 29%
UV Index: 0
Wind: 24 mph
10 PM
Cloudy Night
41°
Feels Like 27°
0
Humidity: 30%
UV Index: 0
Wind: 24 mph
11 PM
Cloudy Night
41°
Feels Like 25°
0
Humidity: 30%
UV Index: 0
Wind: 24 mph

Hourly Air Quality Forecast - AQI (US EPA)

1 AM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.64 µg/m³
  • PM10: 0.7 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

2 AM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.68 µg/m³
  • PM10: 0.76 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

3 AM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.68 µg/m³
  • PM10: 0.76 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

4 AM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.69 µg/m³
  • PM10: 0.77 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

5 AM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.7 µg/m³
  • PM10: 0.79 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.11 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.7 µg/m³
  • PM10: 0.8 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

7 AM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.72 µg/m³
  • PM10: 0.82 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.6 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

8 AM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.74 µg/m³
  • PM10: 0.85 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.1 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

9 AM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.71 µg/m³
  • PM10: 0.83 µg/m³
  • O3: 0.048 ppm
  • NO2: 1.2 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

10 AM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.64 µg/m³
  • PM10: 0.76 µg/m³
  • O3: 0.048 ppm
  • NO2: 1 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

11 AM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.55 µg/m³
  • PM10: 0.65 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.6 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

12 PM
51 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.51 µg/m³
  • PM10: 0.54 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

1 PM
52 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.51 µg/m³
  • PM10: 0.54 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

2 PM
51 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.51 µg/m³
  • PM10: 0.54 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

3 PM
53 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.51 µg/m³
  • PM10: 0.54 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

4 PM
53 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.53 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

5 PM
53 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.53 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

6 PM
54 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.52 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

7 PM
55 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.52 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

8 PM
56 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.53 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

9 PM
57 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.54 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

10 PM
57 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.52 µg/m³
  • PM10: 0.58 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

11 PM
58 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.52 µg/m³
  • PM10: 0.6 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Great Falls

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
Severe Expected Likely

High Wind Warning

High Wind Warning issued February 25 at 8:31PM MST until February 27 at 11:00AM MST by NWS Great Falls MT
Feb 26, 12:00 AM → Feb 27, 11:00 AM
WHAT: West winds 35 to 45 mph, with gusts up to 60 mph expected.

WHERE: Portions of central and north central Montana.

WHEN: 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.
Updated: Feb 25, 10:54 PM Source: NWS Alert