Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Air Quality Alert |
| Area(s): | Beaverhead, MT; Broadwater, MT; Deer Lodge, MT; Flathead, MT; Gallatin, MT; Granite, MT; Jefferson, MT; Lake, MT; Lewis and Clark, MT; Lincoln, MT; Madison, MT; Mineral, MT; Missoula, MT; Park, MT; Powell, MT; Ravalli, MT; Sanders, MT; Silver Bow, MT |
| Effective: | 2026-08-07 @ 9:30 am -> 2026-08-08 @ 10:00 am |
| Onset: | 2026-08-07 @ 9:30 am |
| Severity: | Unknown |
| Certainty: | Unknown |
| Urgency: | Unknown |
| Issued By: | NWS Great Falls MT on 2026-08-07 @ 9:31 am |
| Headline: | Air Quality Alert issued August 7 at 8:30AM MDT by NWS Great Falls MT |
| Description: |
AQAMT The Montana Department of Environmental Quality has issued an air quality alert for Beaverhead, Broadwater, Deer Lodge, Gallatin, Granite, Jefferson, Lake, Lincoln, Madison, Mineral, Park, Powell, Ravalli, Silver Bow, Flathead, Lewis and Clark, Mineral, Missoula, Powell, Sanders counties in effect until 9AM on 08/08/2026 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 08/07/2026, particulate levels in Columbia Falls, Dillon and Libby are Unhealthy. As of 7AM on 08/07/2026, particulate levels in Butte, Frenchtown, Hamilton, Helena, Missoula and Thompson Falls are Unhealthy for Sensitive Groups. As of 7AM on 08/07/2026, particulate levels in Billings, Great Falls 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 |
| Alert: | Red Flag Warning |
| Area(s): | Lincoln Ranger District of the Helena National Forest; Central and Eastern Lewis and Clark National Forest Areas; Helena and Townsend Ranger Districts of the Helena National Forest |
| Effective: | 2026-08-06 @ 11:51 pm -> 2026-08-07 @ 3:00 pm |
| Onset: | 2026-08-07 @ 1:00 pm -> 2026-08-08 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-08-06 @ 11:51 pm |
| Headline: | Red Flag Warning issued August 6 at 10:51PM MDT until August 8 at 9:00PM MDT by NWS Great Falls MT |
| Description: |
The National Weather Service in Great Falls has issued a Red Flag Warning for hot temperatures, gusty winds, and low relative humidity, which is in effect from noon Friday to 9 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Lincoln Ranger District of the Helena National Forest, Central and Eastern Lewis and Clark National Forest Areas and Helena and Townsend Ranger Districts of the Helena National Forest. * WINDS...West 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 10 percent. * TEMPERATURES...Afternoon temperatures around 95 degrees. * IMPACTS...Any fires that develop will spread rapidly. Containment of any ongoing or new fires may be very difficult. Outdoor burning is not recommended. |
| Alert: | Red Flag Warning |
| Area(s): | Deerlodge/Western Beaverhead National Forest; Eastern Beaverhead National Forest |
| Effective: | 2026-08-06 @ 10:41 pm -> 2026-08-07 @ 6:45 am |
| Onset: | 2026-08-07 @ 1:00 pm -> 2026-08-08 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-08-06 @ 10:41 pm |
| Headline: | Red Flag Warning issued August 6 at 9:41PM MDT until August 8 at 9:00PM MDT by NWS Missoula MT |
| Description: |
...RED FLAG WARNING IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT SATURDAY DUE TO WIND AND LOW RELATIVE HUMIDITY FOR PALOUSE/HELLS CANYON... ...RED FLAG WARNING IN EFFECT FROM NOON FRIDAY TO 9 PM MDT SATURDAY DUE TO WIND AND LOW RELATIVE HUMIDITY FOR EAST LOLO, BITTERROOT, DEERLODGE/WEST BEAVERHEAD, AND EAST BEAVERHEAD... ...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT SATURDAY DUE TO WIND AND LOW RELATIVE HUMIDITY FOR WEST LOLO AND FLATHEAD RESERVATION... ... The National Weather Service in Missoula MT has issued a Red Flag Warning in effect from noon Friday to 9 PM MDT Saturday. * AFFECTED AREA...Fire Weather Zones 110 and 111. * TIMING...From noon Friday to 9 PM MDT Saturday. * WINDS...West winds 5 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...Relative Humidity between 8 to 15 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended. |
| Alert: | Red Flag Warning |
| Area(s): | Eastern Lolo National Forest/Welcome Creek And Scapegoat Wildernesses; Bitterroot National Forest |
| Effective: | 2026-08-06 @ 10:41 pm -> 2026-08-07 @ 6:45 am |
| Onset: | 2026-08-07 @ 1:00 pm -> 2026-08-08 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-08-06 @ 10:41 pm |
| Headline: | Red Flag Warning issued August 6 at 9:41PM MDT until August 8 at 9:00PM MDT by NWS Missoula MT |
| Description: |
...RED FLAG WARNING IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT SATURDAY DUE TO WIND AND LOW RELATIVE HUMIDITY FOR PALOUSE/HELLS CANYON... ...RED FLAG WARNING IN EFFECT FROM NOON FRIDAY TO 9 PM MDT SATURDAY DUE TO WIND AND LOW RELATIVE HUMIDITY FOR EAST LOLO, BITTERROOT, DEERLODGE/WEST BEAVERHEAD, AND EAST BEAVERHEAD... ...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT SATURDAY DUE TO WIND AND LOW RELATIVE HUMIDITY FOR WEST LOLO AND FLATHEAD RESERVATION... ... The National Weather Service in Missoula MT has issued a Red Flag Warning in effect from noon Friday to 9 PM MDT Saturday. * AFFECTED AREA...Fire Weather Zones 108 and 109. * TIMING...From noon Friday to 9 PM MDT Saturday. * WINDS...West winds 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...Relative Humidity between 8 to 15 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended. |
| Alert: | Red Flag Warning |
| Area(s): | Western Lolo National Forest; Salish and Kootenai Indian Reservation |
| Effective: | 2026-08-06 @ 10:41 pm -> 2026-08-07 @ 6:45 am |
| Onset: | 2026-08-08 @ 1:00 pm -> 2026-08-08 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Missoula MT on 2026-08-06 @ 10:41 pm |
| Headline: | Red Flag Warning issued August 6 at 9:41PM MDT until August 8 at 9:00PM MDT by NWS Missoula MT |
| Description: |
...RED FLAG WARNING IN EFFECT FROM 11 AM FRIDAY TO 11 PM PDT SATURDAY DUE TO WIND AND LOW RELATIVE HUMIDITY FOR PALOUSE/HELLS CANYON... ...RED FLAG WARNING IN EFFECT FROM NOON FRIDAY TO 9 PM MDT SATURDAY DUE TO WIND AND LOW RELATIVE HUMIDITY FOR EAST LOLO, BITTERROOT, DEERLODGE/WEST BEAVERHEAD, AND EAST BEAVERHEAD... ...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT SATURDAY DUE TO WIND AND LOW RELATIVE HUMIDITY FOR WEST LOLO AND FLATHEAD RESERVATION... ... The National Weather Service in Missoula MT has issued a Red Flag Warning in effect from noon to 9 PM MDT Saturday. * AFFECTED AREA...Fire Weather Zones 106 and 107. * TIMING...From noon to 9 PM MDT Saturday. * WINDS...West winds 10 to 15 mph with gusts up to 25 mph. * RELATIVE HUMIDITY...Relative Humidity between 10 to 17 percent. * IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended. |
| Alert: | Fire Weather Watch |
| Area(s): | Gallatin National Forest; Wheatland County/Sweet Grass County; Stillwater County; Beartooth Ranger District Custer National Forest; Golden Valley County/Musselshell County; Yellowstone County; Crow Indian Reservation/Big Horn Canyon Rec Area; Northern Rosebud/Northern Treasure Counties; Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest; Sheridan County/Casper BLM; Bighorn National Forest |
| Effective: | 2026-08-06 @ 9:01 pm -> 2026-08-07 @ 9:15 pm |
| Onset: | 2026-08-08 @ 12:00 pm -> 2026-08-08 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-08-06 @ 9:01 pm |
| Headline: | Fire Weather Watch issued August 6 at 8:01PM MDT until August 8 at 9:00PM MDT by NWS Billings MT |
| Description: |
* IMPACTS: Low humidities, hot temperatures, and strong gusty winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In North Central WY Fire Zones...274...284. In South Central MT Fire Zones...123...124...125...126...127 128...129. In Southeast MT Fire Zones...130...131. * COUNTIES AFFECTED: In Central MT...Golden Valley...Musselshell...Wheatland. In North Central WY...Big Horn...Johnson...Sheridan...Washakie. In South Central MT...Big Horn...Carbon...Park...Stillwater Sweet Grass...Yellowstone. In Southeast MT...Powder River...Rosebud...Treasure. In Southwest MT...Gallatin. * WIND: Northwest 5 to 15 mph with gusts up to 30 mph. * HUMIDITY: As low as 11 percent. * TEMPERATURES: Up to 100. |
| Alert: | Fire Weather Watch |
| Area(s): | Custer County; Sioux Ranger District Custer National Forest |
| Effective: | 2026-08-06 @ 9:01 pm -> 2026-08-07 @ 9:15 pm |
| Onset: | 2026-08-08 @ 12:00 pm -> 2026-08-08 @ 10:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-08-06 @ 9:01 pm |
| Headline: | Fire Weather Watch issued August 6 at 8:01PM MDT until August 8 at 9:00PM MDT by NWS Billings MT |
| Description: |
The National Weather Service in Billings has issued a Fire Weather Watch...which is in effect from Saturday morning through Saturday evening. * IMPACTS: Low humidities, hot temperatures, and strong gusty winds will create erratic fire behavior and new fire starts. * AFFECTED AREA: In Southeast MT Fire Zone...132. In Southeast MT and Northwest SD Fire Zone...133. * COUNTIES AFFECTED: In Northwest SD...Harding. In Southeast MT...Carter...Custer...Fallon. * WIND: East 5 to 15 mph with gusts up to 30 mph. * HUMIDITY: As low as 8 percent. * TEMPERATURES: Up to 97. |
| Alert: | Fire Weather Watch |
| Area(s): | The Lower Missouri River Breaks including the Charles M Russell National Wildlife Refuge; Southern Petroleum and Southern Garfield Counties |
| Effective: | 2026-08-06 @ 7:40 pm -> 2026-08-07 @ 5:00 pm |
| Onset: | 2026-08-08 @ 1:00 pm -> 2026-08-08 @ 9:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Glasgow MT on 2026-08-06 @ 7:40 pm |
| Headline: | Fire Weather Watch issued August 6 at 6:40PM MDT until August 8 at 8:00PM MDT by NWS Glasgow MT |
| Description: |
...RED FLAG WARNING WILL EXPIRE AT 7 PM MDT THIS EVENING FOR STRONG WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 136 AND 137... The National Weather Service in Glasgow has issued a Fire Weather Watch, which is in effect from Saturday afternoon through Saturday evening. * WIND...Northwest at 15 to 25 mph with gusts to 30 mph. * HUMIDITY...As low as 12 percent. * 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; Flathead, MT; Granite, MT; Lake, MT; Lincoln, MT; Madison, MT; Mineral, MT; Missoula, MT; Ravalli, MT; Sanders, MT; Silver Bow, MT |
| Effective: | 2026-08-06 @ 8:15 am -> 2026-08-07 @ 10:00 am |
| Onset: | 2026-08-06 @ 8:15 am |
| Severity: | Unknown |
| Certainty: | Unknown |
| Urgency: | Unknown |
| Issued By: | NWS Great Falls MT on 2026-08-06 @ 8:34 am |
| Headline: | Air Quality Alert issued August 6 at 7:15AM MDT by NWS Great Falls MT |
| Description: |
AQAMT The Montana Department of Environmental Quality has issued an air quality alert for Beaverhead, Deer Lodge, Flathead, Granite, Lake, Lincoln, Madison, Mineral, Ravalli, Sanders, Silver Bow, and Missoula counties in effect until 9AM on 08/07/2026 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 08/06/2026, particulate levels in Frenchtown, Hamilton and Libby are Unhealthy for Sensitive Groups. As of 7AM on 08/06/2026, particulate levels in Billings, Butte, Columbia Falls, Cut Bank, Dillon, Great Falls, Helena, Lewistown, Missoula, Sleeping Giant and Thompson Falls are Moderate. 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 |