Hourly Weather | Today Tuesday, September 1, 2026
Bozeman, Montana
10 AM
Cloudy Weather
64°
Feels Like 70°
49
Humidity: 49%
UV Index: 2
Wind: 4 mph
11 AM
Cloudy Weather
68°
Feels Like 75°
34
Humidity: 42%
UV Index: 5
Wind: 4 mph
12 PM
Cloudy Weather
73°
Feels Like 79°
34
Humidity: 38%
UV Index: 5
Wind: 6 mph
1 PM
Cloudy Weather
75°
Feels Like 81°
34
Humidity: 35%
UV Index: 6
Wind: 6 mph
2 PM
Cloudy Weather
77°
Feels Like 82°
34
Humidity: 32%
UV Index: 5
Wind: 6 mph
3 PM
Cloudy Weather
77°
Feels Like 82°
34
Humidity: 31%
UV Index: 5
Wind: 6 mph
4 PM
Cloudy Weather
79°
Feels Like 81°
40
Humidity: 30%
UV Index: 4
Wind: 7 mph
5 PM
Sunny with a Chance of Thunderstorms
77°
Feels Like 73°
51
Humidity: 34%
UV Index: 1
Wind: 7 mph
6 PM
Cloudy Weather
77°
Feels Like 75°
47
Humidity: 34%
UV Index: 1
Wind: 7 mph
7 PM
Cloudy Weather
73°
Feels Like 72°
40
Humidity: 40%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Weather
70°
Feels Like 66°
34
Humidity: 47%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
66°
Feels Like 64°
34
Humidity: 56%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
63°
Feels Like 63°
37
Humidity: 64%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
59°
Feels Like 59°
43
Humidity: 72%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.14 µg/m³
  • PM10: 1.29 µg/m³
  • O3: 0.026 ppm
  • NO2: 0.9 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.14 µg/m³
  • PM10: 1.23 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.2 µg/m³
  • PM10: 1.25 µg/m³
  • O3: 0.032 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.

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

Pollutant Concentrations:

  • PM2.5: 1.22 µg/m³
  • PM10: 1.29 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

2 PM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.23 µg/m³
  • PM10: 1.31 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.2 µg/m³
  • PM10: 1.28 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.01 µg/m³
  • PM10: 1.12 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.86 µg/m³
  • PM10: 1 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.82 µg/m³
  • PM10: 0.97 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.79 µg/m³
  • PM10: 0.92 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.76 µg/m³
  • PM10: 0.86 µg/m³
  • O3: 0.035 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.76 µg/m³
  • PM10: 0.84 µg/m³
  • O3: 0.033 ppm
  • NO2: 0.8 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.73 µg/m³
  • PM10: 0.8 µg/m³
  • O3: 0.031 ppm
  • NO2: 0.9 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.71 µg/m³
  • PM10: 0.77 µg/m³
  • O3: 0.029 ppm
  • NO2: 0.9 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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