2025 Alaska wildfires

The 2025 Alaska wildfires are a series of active wildfires currently ongoing in Alaska.

Alaska’s wildfire season is primarily driven by its boreal forest and tundra ecosystems, which can dry rapidly during the long summer days. The core fire season generally runs from late May through early August, peaking in June and July when extended daylight, low humidity, and warm temperatures combine with lightning activity to spark large fires. Many of the state’s largest recorded wildfires have occurred during this midsummer window.^[1]

In interior Alaska, lightning-caused wildfires dominate, often in remote areas where suppression efforts are focused on protecting communities and infrastructure rather than full containment. In contrast, coastal regions see fewer large fires due to higher humidity and more frequent rainfall.^[2]

While most wildfire activity is concentrated in summer, fires can occur as early as April or as late as September during unusually dry years. The Alaska Division of Forestry and Fire Protection issues burn permits for open debris burning from April 1 through August 31 in much of the state, with temporary suspensions during periods of high fire danger.^[3]

By the end of spring (June 20), the total area burned by wildfires in Alaska was approximately 312,000 acres (126,000 ha)—well above the state’s five-year spring average. Much of the early activity occurred across the Interior and Yukon–Koyukuk Census Area, where unusually warm temperatures, low humidity, and strong winds fueled fast-moving tundra and boreal forest fires.^[4]

The first fatality of the 2025 Alaska fire season was reported on July 4, when a pilot conducting reconnaissance for fire mapping was killed after a small plane crash near Nenana.^[5]

Throughout July, extreme heat and thunderstorms across central Alaska drove rapid fire growth. The Tanana Complex and Ray River Fire each burned tens of thousands of acres within a week, producing heavy smoke impacts from Fairbanks to Anchorage. By July 31, more than 1.42×10⁶ acres (5.7×10⁵ ha) had burned statewide—making 2025 Alaska’s most active season since 2022.^[6]

Fire activity eased slightly in early August, aided by cooler, wetter weather across the western Interior. However, late-month lightning storms reignited fire growth in the Nowitna and Hodzana regions, with dozens of new ignitions recorded on August 28–30. ^[7]

By mid-September, cooler temperatures and widespread rain brought an effective end to large fire activity across most of the state. The 2025 Alaska wildfire season has so far burned an estimated 1.68 million acres roughly double the 10-year average—with limited structural loss but significant smoke and ecological impacts across interior tundra and boreal ecosystems.^[8]

The following is a list of fires that burned more than 1,000 acres (400 ha), produced significant structural damage, or resulted in casualties.