Yellowstone National Park, Wyoming

Regional Weather Alerts


     

Alert: Fire Weather Watch
Area(s): Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties; Dawson/McCone/Prairie/Richland/Wibaux Counties; Northern Valley and Northern Phillips Counties; The Little Rockies; The Lower Missouri River Breaks including the Charles M Russell National Wildlife Refuge; Southern Petroleum and Southern Garfield Counties
Effective: 2026-08-04 @ 12:48 pm -> 2026-08-05 @ 5:15 am
Onset: 2026-08-06 @ 1:00 pm -> 2026-08-06 @ 9:00 pm
Severity: Severe
Certainty: Possible
Urgency: Future
Issued By: NWS Glasgow MT on 2026-08-04 @ 12:48 pm
Headline: Fire Weather Watch issued August 4 at 11:48AM MDT until August 6 at 8:00PM MDT by NWS Glasgow MT
Description: The National Weather Service in Glasgow has issued a Fire Weather
Watch, which is in effect from Thursday afternoon through
Thursday evening.

* AFFECTED AREA...Fire weather zones 120, 122, 134, 135, 136,
and 137.

* WIND...Northwest at 15 to 25 mph with gusts to 35 mph.

* HUMIDITY...As low as 10 percent in the southwest, and as low as
15 percent in the northeast.

* THUNDERSTORMS...None

* IMPACTS...Any fires that develop will likely spread rapidly.
Outdoor burning is not recommended.

Alert: Air Quality Alert
Area(s): Beaverhead, MT; Deer Lodge, MT; Granite, MT; Lake, MT; Madison, MT; Mineral, MT; Missoula, MT; Powell, MT; Ravalli, MT; Sanders, MT; Silver Bow, MT
Effective: 2026-08-04 @ 8:12 am -> 2026-08-05 @ 10:00 am
Onset: 2026-08-04 @ 8:12 am
Severity: Unknown
Certainty: Unknown
Urgency: Unknown
Issued By: NWS Great Falls MT on 2026-08-04 @ 8:15 am
Headline: Air Quality Alert issued August 4 at 7:12AM MDT by NWS Great Falls MT
Description: AQAMT

The Montana Department of Environmental Quality has issued an air
quality alert for Beaverhead, Deer Lodge, Granite, Lake, Madison,
Mineral, Missoula, Powell, Ravalli, Sanders, and Silver Bow counties
in effect until 9AM on 08/05/2026
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 due to wildfire smoke

As of 6AM on 08/04/2026, particulate levels in Billings, Butte,
Columbia Falls, Cut Bank, Dillon, Frenchtown, Great Falls, Hamilton,
Helena, Libby, Missoula, Sleeping Giant and Thompson Falls are
Moderate.

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

Alert: Air Quality Alert
Area(s): Flathead, MT; Lincoln, MT
Effective: 2026-08-04 @ 8:12 am -> 2026-08-05 @ 10:00 am
Onset: 2026-08-04 @ 8:12 am
Severity: Unknown
Certainty: Unknown
Urgency: Unknown
Issued By: NWS Great Falls MT on 2026-08-04 @ 8:15 am
Headline: Air Quality Alert issued August 4 at 7:12AM MDT by NWS Great Falls MT
Description: AQAMT

The Air Quality Alert for Flathead and Lincoln Counties has been
cancelled.

For more information visit the Montana Department of Environmental
Quality at www.todaysair.mt.gov