Feed checks and source-record updates do not necessarily mean fire conditions changed. Figures below reflect the last recorded incident report.
The last recorded incident change is more than 14 days old or undated. Historical fire behavior and summaries below are not confirmation of current conditions.
Automated summary generated: Nov 5, 2026 20:05 UTC. It may lag behind the report and is not an official alert.
The Border wildfire in Boundary County, Idaho was first discovered on 2026-08-25 and reported by the USFS. Initial NIFC reports on 2026-08-28 noted 35 acres with no containment data. By 2026-08-30 the fire had grown to 43 acres and was 0% contained, described as active with flanking and backing behavior. On 2026-09-01 the acreage increased to 46 acres and containment reached 20%, rising to 38% later that day. The fire size later decreased to 37 acres with 83% containment on 2026-09-02, and reached full containment (100%) by 2026-09-07, with a final acreage of 35 acres.
Official source description: 3 Miles W from Porthill, ID
Minimal; Creeping; Smoldering
Historical observations from incident reports, not a live forecast. Acreage and containment can decrease when agencies correct their estimates.
9
35 acres
35 acres
Latest available source report: Sep 7, 2026 23:20 UTC. This is the report date, not confirmation of current fire conditions.
Reported acreage was unchanged by 0 acres between the first and last available acreage measurements. Recorded containment rose by 100.0 percentage points, from 0.0% (Aug 30, 2026) to 100.0% (Sep 7, 2026), using the first and last reports with a known containment value.
| Report date (UTC) | Acres | Containment | Source |
|---|---|---|---|
| Aug 28, 2026 15:20 | 35 | Not reported | NIFC |
| Aug 30, 2026 00:20 | 43 | 0.0% | NIFC |
| Sep 1, 2026 00:00 | 46 | 20.0% | NIFC |
| Sep 1, 2026 23:20 | 46 | 38.0% | NIFC |
| Sep 2, 2026 23:40 | 37 | 83.0% | NIFC |
| Sep 7, 2026 02:20 | 35 | 83.0% | NIFC |
| Sep 7, 2026 23:00 | 37 | 100.0% | NIFC |
| Sep 7, 2026 23:20 | 35 | 100.0% | NIFC |
| Report date (UTC) | Acres | Containment | Source |
|---|---|---|---|
| Aug 28, 2026 15:20 | 35 | Not reported | NIFC |
| Aug 30, 2026 00:20 | 43 | 0.0% | NIFC |
| Aug 30, 2026 22:40 | 43 | 0.0% | NIFC |
| Sep 1, 2026 00:00 | 46 | 20.0% | NIFC |
| Sep 1, 2026 23:20 | 46 | 38.0% | NIFC |
| Sep 2, 2026 23:40 | 37 | 83.0% | NIFC |
| Sep 7, 2026 02:20 | 35 | 83.0% | NIFC |
| Sep 7, 2026 23:00 | 37 | 100.0% | NIFC |
| Sep 7, 2026 23:20 | 35 | 100.0% | NIFC |
Good air quality at the reporting station. AQI does not assess fire danger, road access or evacuation status.
Reporting area: Kootenai Tribe. Source: AirNow.gov (EPA).
Observed: 2026-11-08 01:00:00 UTC Β· Site: Boundary County.
Any automated community or travel summary below may be outdated. It is not a live evacuation or road-closure notice.
Verify evacuation orders, closures and access with the responsible fire agency, county emergency management or sheriff. A containment percentage, feed status or AQI reading does not establish that an area is safe to enter.
NIFC fire information and official resources βIRWIN ID: {BE3316BA-5063-458B-8D92-B8796F53D139}
Discovered: Aug 25, 2026
Cause: Natural
Managing Agency: USFS
Est. Cost to Date: $1,527,140
Coordinates: 48.9982, -116.7224
Other wildfires no longer present in our filtered incident feed in ID.
The Border Fire has burned 35 acres as of September 7, 2026.
Yes, the Border Fire is fully contained (100%).
The official cause has been listed as: Natural.
The Border Fire is burning in Boundary, ID.
The Border Fire currently meets our U.S. incident tracking criteria. This does not confirm current fire behavior.
Real-time map, acreage, and containment for every major U.S. wildfire, updated from official NIFC data.
View Live Map →