The 2025 Idaho wildfires were a series of wildfires that burned throughout the U.S. state of Idaho.
While the "fire season" in Idaho varies every year based on fire weather conditions, most wildfires occur from June to September. Fire activities normally increase in July and August because of drier conditions, hotter temperatures, and more lightning strikes from thunderstorms. However, wildfire severity can vary every year based on preseason conditions such as snowpack and the overcrowded growth of vegetation and dying trees.
By early summer, IdahoâÂÂs 2025 wildfire season was already active, driven by dry fuels, low moisture levels, and abundant lightning storms. Several fires ignited across the state before July, especially in forested and mountainous regions.
Lightning storms in late August burned across northern Idaho. In the Coeur dâÂÂAlene zone alone, around 29 wildfires were started by lightning between August 29âÂÂ30; most were controlled, though a few escaped initial attack lines. Among them, the Ulm Creek Fire (on the Coeur dâÂÂAlene River Ranger District) had grown from ~100 to ~400 acres under a Type-3 incident organization.
By late summer and early fall, several large fires had burned tens of thousands of acres across multiple counties. Smoke from these fires degraded air quality across many parts of the state, especially in central and northern Idaho. Fire crews faced supply constraints, rugged terrain, and the challenge of widely scattered fires stretching over remote landscapes.
Officials noted additional ignitions and fire growth were likely through October, especially with dry fuels and late-season lightning possibilities. In mid November, the Idaho Department of Lands Director reported the state's expenses for the 2025 wildfire season netted about $40.6 million. This marked a steep reduction from the 2024 Idaho wildfire season, where state wildfire expenses were estimated around $58 million.
The following is a list of fires that burned more than , or produced significant structural damage or casualties.