Hourly Weather | Today Wednesday, August 12, 2026
Active Weather Warnings
Missoula, Montana
7 AM
Cloudy Weather
54°
Feels Like 57°
0
Humidity: 68%
UV Index: 1
Wind: 1 mph
8 AM
Cloudy Weather
55°
Feels Like 61°
0
Humidity: 63%
UV Index: 2
Wind: 2 mph
9 AM
Cloudy Weather
61°
Feels Like 68°
0
Humidity: 54%
UV Index: 3
Wind: 2 mph
10 AM
Cloudy Weather
66°
Feels Like 73°
0
Humidity: 45%
UV Index: 4
Wind: 4 mph
11 AM
Cloudy Weather
72°
Feels Like 79°
0
Humidity: 37%
UV Index: 5
Wind: 5 mph
12 PM
Cloudy Weather
75°
Feels Like 84°
0
Humidity: 32%
UV Index: 7
Wind: 6 mph
1 PM
Cloudy Weather
81°
Feels Like 88°
0
Humidity: 28%
UV Index: 7
Wind: 6 mph
2 PM
Cloudy Weather
82°
Feels Like 90°
3
Humidity: 25%
UV Index: 7
Wind: 6 mph
3 PM
Cloudy Weather
84°
Feels Like 90°
3
Humidity: 23%
UV Index: 5
Wind: 7 mph
4 PM
Cloudy Weather
86°
Feels Like 88°
3
Humidity: 22%
UV Index: 4
Wind: 7 mph
5 PM
Cloudy Weather
88°
Feels Like 88°
4
Humidity: 21%
UV Index: 3
Wind: 7 mph
6 PM
Cloudy Weather
86°
Feels Like 84°
4
Humidity: 22%
UV Index: 2
Wind: 8 mph
7 PM
Cloudy Weather
84°
Feels Like 82°
4
Humidity: 24%
UV Index: 1
Wind: 8 mph
8 PM
Cloudy Weather
81°
Feels Like 77°
5
Humidity: 30%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Weather
75°
Feels Like 73°
5
Humidity: 37%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Weather
72°
Feels Like 70°
5
Humidity: 47%
UV Index: 0
Wind: 8 mph
11 PM
Cloudy Weather
70°
Feels Like 66°
6
Humidity: 56%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

7 AM
87 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 29.32 µg/m³
  • PM10: 29.56 µg/m³
  • O3: 0.030 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 AM
88 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 29.65 µg/m³
  • PM10: 29.9 µg/m³
  • O3: 0.029 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

9 AM
89 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 30.27 µg/m³
  • PM10: 30.54 µg/m³
  • O3: 0.030 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

10 AM
100 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 35.35 µg/m³
  • PM10: 35.69 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.3 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

11 AM
102 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 36.14 µg/m³
  • PM10: 36.48 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

12 PM
102 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 36.03 µg/m³
  • PM10: 36.36 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.12 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

1 PM
134 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 48.85 µg/m³
  • PM10: 49.17 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

2 PM
151 AQI
Unhealthy air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 56.79 µg/m³
  • PM10: 57.12 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

Everyone may begin to experience health effects; sensitive groups may experience more serious effects.

3 PM
145 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 53.52 µg/m³
  • PM10: 53.84 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

4 PM
134 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 49.08 µg/m³
  • PM10: 49.38 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

5 PM
123 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 44.45 µg/m³
  • PM10: 44.73 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

6 PM
112 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 40.38 µg/m³
  • PM10: 40.64 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

7 PM
103 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 36.65 µg/m³
  • PM10: 36.9 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

8 PM
96 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 33.45 µg/m³
  • PM10: 33.67 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.5 ppb
  • SO2: 0 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

9 PM
90 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 30.65 µg/m³
  • PM10: 30.86 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.5 ppb
  • SO2: 0 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

10 PM
86 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 28.78 µg/m³
  • PM10: 28.98 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.5 ppb
  • SO2: 0 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

11 PM
85 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 28.22 µg/m³
  • PM10: 28.41 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.5 ppb
  • SO2: 0 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Missoula

Air Quality Alert

Air Quality Alert issued August 11 at 8:15AM MDT by NWS Great Falls MT
Aug 11, 8:15 AM Aug 12, 9:00 AM
AQAMT

The Montana Department of Environmental Quality has issued an air
quality alert for Beaverhead, Deer Lodge, Gallatin, Granite, Madison,
Park, Flathead, Jefferson, Lake, Lewis and Clark, Lincoln, Mineral,
Missoula, Powell, Ravalli, and Silver Bow counties in effect until
9AM on 08/12/2026
An Air Quality Alert means that particulates have been trending
upwards and that an exceedance of the 24 hour National Ambient Air
Quality Standard (NAAQS) has occurred or may occur in the near
future.

Elevated particulate levels from wildfire smoke

As of 8AM on 08/11/2026, particulate levels in Missoula are
Unhealthy.

As of 8AM on 08/11/2026, particulate levels in Dillon, Frenchtown,
Great Falls and Hamilton are Unhealthy for Sensitive Groups.

As of 8AM on 08/11/2026, particulate levels in Billings, Butte,
Choteau, Columbia Falls, Cut Bank, Helena, Lewistown, Libby, Malta,
Thompson Falls and West Yellowstone are Moderate.

When air quality is Unhealthy... State and local health officials
recommend that people with respiratory or heart disease, the elderly,
and children should avoid prolonged exertion; everyone else should
limit prolonged exertion.

When air quality is Unhealthy for Sensitive Groups... State and local
health officials recommend that people with respiratory or heart
disease, the elderly and children should limit prolonged exertion.

When air quality is Moderate... State and local health officials
recommend that unusually sensitive people should consider reducing
prolonged or heavy exertion.

For more information visit the Montana Department of Environmental
Quality at http://todaysair.mtdeq.us
Updated: Aug 12, 6:29 AM Source: NWS Alert