Windmill Fire
No longer in current feed
Stillwater County, Montana · Discovered August 19, 2026
Source: NIFC/IRWIN (interagency) · Last upstream update 12 hours ago
Windmill Fire
The Windmill Fire fire has burned 4,253 acres in Stillwater County, Montana. It is no longer in the current official feed, so the figures on this page reflect the last data reported. Crews have fully contained the fire. Air quality near the fire is good (AQI 37). 105 personnel are assigned to the incident.
Windmill Fire size over time
11 official size readingsGrew from 50 to 4,253 acres across these reports.
Acreage as reported by the official incident feed, recorded by Fire Nearby each time it changes. Hover or tap the chart for each reading.
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Incident timeline
Generated automatically from official feeds the moment they change: size, containment, evacuation zones, aircraft, and incident team updates.
Fire reported 100% contained
61 days ago · September 10, 2026New perimeter mapped at 4,253 acres (national perimeter feed)
77 days ago · August 25, 2026Containment rose to 100%
78 days ago · August 24, 2026Containment rose to 72%
79 days ago · August 23, 2026Containment rose to 57%
80 days ago · August 22, 2026Containment rose to 10%
81 days ago · August 22, 2026Grew 894 acres in 23 hours to 4,194 acres
81 days ago · August 22, 2026Grew 300 acres in 11 hours to 3,300 acres
82 days ago · August 21, 2026Official incident page published on InciWeb: Windmill Fire
82 days ago · August 20, 2026Grew 2,000 acres in 15 hours to 3,000 acres
82 days ago · August 20, 2026Containment dropped to 0% (from 100%)
83 days ago · August 19, 2026Grew 200 acres in about an hour to 1,000 acres
83 days ago · August 19, 2026Grew 750 acres in about an hour to 800 acres
83 days ago · August 19, 2026Fire first listed in official incident feeds at 50 acres
83 days ago · August 19, 2026
Raw growth & containment readings
| Recorded | Size | Contained |
|---|---|---|
| 8/24/2026, 10:19:05 PM | 4,253 acres | 100% |
| 8/23/2026, 11:30:22 PM | 4,253 acres | 72% |
| 8/22/2026, 11:05:00 PM | 4,253 acres | 57% |
| 8/22/2026, 12:01:42 AM | 4,194 acres | 10% |
| 8/21/2026, 1:18:53 AM | 3,300 acres | 1% |
| 8/20/2026, 8:34:32 PM | 3,000 acres | 1% |
| 8/20/2026, 1:57:27 PM | 3,000 acres | 0% |
| 8/19/2026, 11:43:17 PM | 1,000 acres | 0% |
| 8/19/2026, 11:24:08 PM | 1,000 acres | - |
| 8/19/2026, 10:17:04 PM | 800 acres | - |
| 8/19/2026, 10:12:02 PM | 50 acres | - |
Recorded by Fire Nearby each time upstream data changes.
About this data
Fire Nearby aggregates official incident data and shows exactly when each value was last updated. For evacuation decisions, always follow instructions from local emergency officials and check county emergency management channels.