Hourly Weather | Today Monday, September 21, 2026
Missoula, Montana
3 PM
Cloudy Weather
75°
Feels Like 81°
0
Humidity: 33%
UV Index: 3
Wind: 4 mph
4 PM
Cloudy Weather
77°
Feels Like 81°
0
Humidity: 30%
UV Index: 3
Wind: 4 mph
5 PM
Cloudy Weather
79°
Feels Like 81°
0
Humidity: 29%
UV Index: 2
Wind: 4 mph
6 PM
Cloudy Weather
77°
Feels Like 77°
0
Humidity: 31%
UV Index: 1
Wind: 4 mph
7 PM
Cloudy Weather
73°
Feels Like 72°
0
Humidity: 35%
UV Index: 0
Wind: 4 mph
8 PM
Cloudy Night
70°
Feels Like 70°
0
Humidity: 41%
UV Index: 0
Wind: 4 mph
9 PM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 47%
UV Index: 0
Wind: 4 mph
10 PM
Cloudy Night
63°
Feels Like 63°
0
Humidity: 54%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
59°
Feels Like 57°
0
Humidity: 60%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.24 µg/m³
  • PM10: 1.7 µg/m³
  • O3: 0.031 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

4 PM
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.22 µg/m³
  • PM10: 1.65 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

5 PM
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.18 µg/m³
  • PM10: 1.58 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.13 µg/m³
  • PM10: 1.51 µg/m³
  • O3: 0.032 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.13 µg/m³
  • PM10: 1.5 µg/m³
  • O3: 0.031 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.08 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: 1.17 µg/m³
  • PM10: 1.53 µg/m³
  • O3: 0.029 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.21 µg/m³
  • PM10: 1.55 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.22 µg/m³
  • PM10: 1.56 µg/m³
  • O3: 0.027 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.24 µg/m³
  • PM10: 1.58 µg/m³
  • O3: 0.027 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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