Hourly Weather | Today Wednesday, February 4, 2026
Great Falls, Montana
6 PM
Cloudy Weather
55°
Feels Like 48°
0
Humidity: 35%
UV Index: 0
Wind: 19 mph
7 PM
Cloudy Night
55°
Feels Like 48°
0
Humidity: 37%
UV Index: 0
Wind: 15 mph
8 PM
Cloudy Night
52°
Feels Like 45°
0
Humidity: 41%
UV Index: 0
Wind: 16 mph
9 PM
Cloudy Night
50°
Feels Like 41°
0
Humidity: 46%
UV Index: 0
Wind: 16 mph
10 PM
Cloudy Night
48°
Feels Like 39°
0
Humidity: 47%
UV Index: 0
Wind: 15 mph
11 PM
Cloudy Night
48°
Feels Like 39°
0
Humidity: 48%
UV Index: 0
Wind: 16 mph

Hourly Air Quality Forecast - AQI (US EPA)

6 PM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.67 µg/m³
  • PM10: 0.81 µg/m³
  • O3: 0.032 ppm
  • NO2: 3.2 ppb
  • SO2: 0 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

7 PM
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.76 µg/m³
  • PM10: 0.92 µg/m³
  • O3: 0.030 ppm
  • NO2: 3.7 ppb
  • SO2: 0 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

8 PM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.84 µg/m³
  • PM10: 1.03 µg/m³
  • O3: 0.029 ppm
  • NO2: 4.1 ppb
  • SO2: 0 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

9 PM
25 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.89 µg/m³
  • PM10: 1.09 µg/m³
  • O3: 0.027 ppm
  • NO2: 4.1 ppb
  • SO2: 0 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

10 PM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.92 µg/m³
  • PM10: 1.13 µg/m³
  • O3: 0.026 ppm
  • NO2: 4.1 ppb
  • SO2: 0 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.96 µg/m³
  • PM10: 1.17 µg/m³
  • O3: 0.026 ppm
  • NO2: 4.1 ppb
  • SO2: 0 ppb
  • CO: 0.15 ppm

Health Recommendations:

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