Weather Forecast for West Yellowstone
Montana, United States of America
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Current Weather - West Yellowstone: 25°C
Current Weather - West Yellowstone: 25°C
Montana, United States of America
Sunny
Feels like 20°C
Wind
14 km/h SW
Humidity
16%
Pressure
1012 mb
UV Index
5
Visibility
10 km
Sunny
Monday, August 10, 2026
High
29°C
Low
9°C
Rain Chance
1%
Hourly Forecast
28°C
21°C
17°C
15°C
14°C
Day Statistics
Maximum Wind
25 km/h
Humidity
23%
Precipitation
0 mm
UV Index
7
Visibility
10 km
Rain Chance
1%
Snow Chance
0%
Sun & Moon
Sunrise
06:21 AM
Sunset
08:38 PM
Moonrise
02:59 AM
Moonset
07:29 PM
Moon Phase
New Moon
Moon Illumination
4%
Air Quality
PM2.5
16.9
μg/m³
PM10
18.5
μg/m³
NO₂
4.8
μg/m³
O₃
119.3
μg/m³
SO₂
0.9
μg/m³
CO
184.2
μg/m³
Sunny
Tuesday, August 11, 2026
High
29°C
Low
8°C
Rain Chance
1%
Hourly Forecast
13°C
12°C
11°C
10°C
10°C
9°C
8°C
9°C
15°C
19°C
22°C
24°C
26°C
28°C
29°C
29°C
29°C
29°C
28°C
27°C
21°C
19°C
17°C
16°C
Day Statistics
Maximum Wind
22 km/h
Humidity
21%
Precipitation
0 mm
UV Index
9
Visibility
10 km
Rain Chance
1%
Snow Chance
0%
Sun & Moon
Sunrise
06:22 AM
Sunset
08:36 PM
Moonrise
04:21 AM
Moonset
08:07 PM
Moon Phase
New Moon
Moon Illumination
1%
Air Quality
PM2.5
16.7
μg/m³
PM10
18.6
μg/m³
NO₂
5.1
μg/m³
O₃
109.4
μg/m³
SO₂
0.9
μg/m³
CO
178.4
μg/m³
Sunny
Wednesday, August 12, 2026
High
27°C
Low
10°C
Rain Chance
36%
Hourly Forecast
14°C
13°C
12°C
11°C
10°C
10°C
10°C
11°C
15°C
19°C
21°C
23°C
26°C
27°C
27°C
27°C
27°C
25°C
21°C
18°C
15°C
12°C
11°C
10°C
Day Statistics
Maximum Wind
25 km/h
Humidity
33%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
36%
Snow Chance
0%
Sun & Moon
Sunrise
06:23 AM
Sunset
08:35 PM
Moonrise
05:48 AM
Moonset
08:37 PM
Moon Phase
New Moon
Moon Illumination
0%
Air Quality
PM2.5
17
μg/m³
PM10
18.2
μg/m³
NO₂
4.8
μg/m³
O₃
114.5
μg/m³
SO₂
0.9
μg/m³
CO
185
μg/m³
Sunny
Thursday, August 13, 2026
High
23°C
Low
8°C
Rain Chance
61%
Hourly Forecast
10°C
9°C
9°C
9°C
8°C
8°C
8°C
9°C
14°C
17°C
20°C
22°C
23°C
20°C
18°C
14°C
14°C
16°C
16°C
13°C
13°C
10°C
11°C
11°C
Day Statistics
Maximum Wind
19 km/h
Humidity
69%
Precipitation
4 mm
UV Index
5
Visibility
8 km
Rain Chance
61%
Snow Chance
0%
Sun & Moon
Sunrise
06:24 AM
Sunset
08:33 PM
Moonrise
07:14 AM
Moonset
09:01 PM
Moon Phase
New Moon
Moon Illumination
2%
Air Quality
PM2.5
15.3
μg/m³
PM10
16.4
μg/m³
NO₂
5.1
μg/m³
O₃
105.3
μg/m³
SO₂
0.8
μg/m³
CO
195.6
μg/m³
Sunny
Friday, August 14, 2026
High
22°C
Low
8°C
Rain Chance
58%
Hourly Forecast
12°C
9°C
9°C
8°C
8°C
11°C
10°C
11°C
11°C
11°C
13°C
15°C
18°C
21°C
22°C
21°C
21°C
21°C
21°C
19°C
15°C
12°C
10°C
9°C
Day Statistics
Maximum Wind
21 km/h
Humidity
67%
Precipitation
3 mm
UV Index
6
Visibility
8 km
Rain Chance
58%
Snow Chance
0%
Sun & Moon
Sunrise
06:25 AM
Sunset
08:32 PM
Moonrise
08:36 AM
Moonset
09:23 PM
Moon Phase
Waxing Crescent
Moon Illumination
5%
Air Quality
PM2.5
15.9
μg/m³
PM10
18.8
μg/m³
NO₂
6.6
μg/m³
O₃
83.4
μg/m³
SO₂
0.3
μg/m³
CO
206.3
μg/m³
Sunny
Saturday, August 15, 2026
High
24°C
Low
7°C
Rain Chance
17%
Hourly Forecast
8°C
8°C
8°C
7°C
7°C
7°C
7°C
10°C
13°C
16°C
18°C
20°C
23°C
23°C
24°C
24°C
24°C
24°C
24°C
21°C
17°C
13°C
12°C
11°C
Day Statistics
Maximum Wind
19 km/h
Humidity
52%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
17%
Snow Chance
0%
Sun & Moon
Sunrise
06:27 AM
Sunset
08:30 PM
Moonrise
09:55 AM
Moonset
09:43 PM
Moon Phase
Waxing Crescent
Moon Illumination
11%
Sunny
Sunday, August 16, 2026
High
26°C
Low
9°C
Rain Chance
57%
Hourly Forecast
11°C
10°C
10°C
10°C
10°C
9°C
9°C
12°C
15°C
18°C
21°C
23°C
25°C
25°C
25°C
26°C
25°C
24°C
23°C
19°C
16°C
13°C
12°C
11°C
Day Statistics
Maximum Wind
23 km/h
Humidity
46%
Precipitation
2 mm
UV Index
7
Visibility
10 km
Rain Chance
57%
Snow Chance
0%
Sun & Moon
Sunrise
06:28 AM
Sunset
08:29 PM
Moonrise
11:13 AM
Moonset
10:05 PM
Moon Phase
Waxing Crescent
Moon Illumination
18%
Solar Radiation Data
Shortwave Radiation
351.1
Diffuse Radiation
37.91
DNI
0
GTI
0
Weather Alerts
Air Quality Alert issued August 10 at 7:30AM MDT by NWS Great Falls MT
AQAMT The Montana Department of Environmental Quality has issued an air quality alert for Beaverhead, Broadwater, Deer Lodge, Flathead, Gallatin, Granite, Jefferson, Lake, Lewis and Clark, Lincoln, Madison, Mineral, Missoula, Park, Powell, Ravalli, Silver Bow, Sweet Grass, Sanders, Yellowstone counties in effect until 9AM on 08/11/2026 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 7AM on 08/10/2026, particulate levels in Columbia Falls, Frenchtown, Libby and Missoula are Unhealthy. As of 7AM on 08/10/2026, particulate levels in Billings, Dillon, Great Falls, Helena and Thompson Falls are Unhealthy for Sensitive Groups. As of 7AM on 08/10/2026, particulate levels in Butte, Cut Bank, Hamilton, Lewistown and Sleeping Giant 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
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