As fire season enters its final stretch across the Pacific Northwest, Idaho continues to see active wildfire suppression on multiple fronts, with five significant incidents totaling more than 19,500 acres still burning as of early October. While cooler and wetter weather is helping contain some blazes, fires in the Panhandle and central Idaho continue to challenge crews.
Active Fires at a Glance
Cascade Fire — Idaho County
The largest active fire in Idaho, the Cascade Fire has burned approximately 7,475 acres in Idaho County and is 80 percent contained. Crews are working to establish final containment lines as weather patterns shift toward fall, with demobilization anticipated in the coming week if conditions hold.
Upper Smith Fire — Boundary County
The Upper Smith Fire is the most actively managed incident in northern Idaho, burning 4,848 acres in Boundary County at 41 percent containment. Moderate fire behavior with smoldering, backing, and flanking has been observed, and residences in the area remain threatened. Firefighters are working to improve perimeter lines while maintaining structure protection capabilities in the wildland-urban interface.
Grotto Fire — Idaho County
The Grotto Fire has burned 3,856 acres in Idaho County and is 50 percent contained. Crews are conducting mop-up and patrol operations along established perimeters while monitoring for potential backing runs in unburned fuels on the fire's flanks.
Silver Fire — Boundary County
The Silver Fire in Boundary County presents the most active suppression challenge in the state at 30 percent containment across 2,593 acres. The fire's proximity to the Upper Smith Fire has created a complex multi-incident management environment in Idaho's northern Panhandle region, with shared resources coordinating between the two incidents.
Doublesprings Fire — Custer County
The Doublesprings Fire in Custer County is nearing final containment at 90 percent across 1,779 acres. Incident commanders expect to transition to patrol operations in the coming days as crews complete mop-up of interior heat sources.
Season Context and What’s Ahead
Idaho experienced a punishing fire season in 2026, with multiple large incidents requiring Type 1 and Type 2 management teams throughout the summer. Lightning from convective storms served as the primary ignition source across the state’s remote backcountry, igniting fires in roadless wilderness areas that required aerial resources and rappeler crews for initial attack.
Boundary County in particular saw sustained fire activity this season, with the Upper Smith and Silver fires burning concurrently in the Panhandle and straining local emergency management resources. An approaching storm system is expected to deliver significant rain and high-elevation snow to northern Idaho, which fire managers hope will accelerate containment on both Panhandle incidents.
Residents near active fire areas should monitor county emergency management websites and sign up for local emergency alerts. Smoke from active fires may continue to affect air quality in portions of northern Idaho and adjacent areas of eastern Washington and western Montana, particularly during morning inversions when smoke can settle into valley communities.