Wildfires have long shaped ecosystems and societies. Below is a chronicle of the 15 largest wildfires ever recorded, ranked by area burned.
The 1974‑75 Australian summer produced the largest fire event in modern history, scorching 289 million acres (117 million hectares). This equates to roughly 15 % of Australia’s landmass, yet the human toll was modest because most of the area burned lay in sparsely populated interior regions. Source: Australian Disaster Resilience Knowledge Hub
Burning an estimated 60 million acres (24.3 million hectares), the 2019‑2020 Australian bushfires devastated wildlife and communities across the country. The event was a stark reminder of the increasing intensity of fire seasons worldwide.
The 2003 Siberian taiga fires consumed about 55 million acres (22 million hectares) of boreal forest, fueled by drought and lightning. They remain among the largest recorded, illustrating the vulnerability of remote wilderness to extreme weather.
In 2021, Russia experienced its largest wildfire outbreak to date, burning nearly 44.5 million acres (18 million hectares). Exceptional heat and drought—driven by climate change—worsened the conditions, extending the pattern of massive Siberian fires.
Spanning China and Russia, the Black Dragon Fire scorched over 18 million acres (7.3 million hectares). Rapidly driven by strong winds, it remains one of the most destructive Asian wildfires on record.
These Canadian fires burned nearly 8 million acres (3.2 million hectares). Mass evacuations followed, and the events prompted a significant shift toward improved fire suppression strategies. Source: The Forestry Chronicle
Fuelled by extreme heat and dry conditions, the Black Friday fires burned almost 5 million acres (2 million hectares) across Victoria, Australia. Entire towns were destroyed, marking one of the most lethal Australian fire events.
Also known as the Wisp Fire, it burned 3.5 to 4.2 million acres (1.4 to 1.7 million hectares) in northern British Columbia and eastern North America. The smoke plume darkened skies as far away as Europe.
Over 5 million acres (2 million hectares) across eastern North America—including Minnesota and Ontario—were consumed. Drought and high winds amplified the devastation.
Also called the Big Burn, this wildfire consumed more than 3 million acres (1.2 million hectares) across northeastern Washington, northern Idaho and western Montana. It is regarded as the largest U.S. wildfire and spurred modern fire‑management reforms.
A series of blazes, including the Great Chicago Fire and the Peshtigo Fire, burned nearly 3 million acres (1.2 million hectares) across Michigan and Wisconsin. High temperatures and winds contributed to their deadly spread.
Alaska’s 2004 wildfire season saw fires that combined into a 1.3 million‑acre (526,000 hectare) complex, the largest in state history. Smoke reached the Los Angeles area, underscoring the far‑field impact of remote fires.
Ignited in Texas, this 2024 fire burned over 1 million acres (428,000 hectares) in nearly three weeks. It stands as one of the largest Texas fires, highlighting escalating risks from extreme heat and drought linked to climate change.
The 1988 Yellowstone fires covered roughly 794,000 acres (321,000 hectares). While they caused significant damage, the event also helped to reset the park’s fire regime, fostering ecological resilience.
These fires burned over 740,000 acres (300,000 hectares) across Russia. The resulting smoke and air pollution plummeted over Moscow, producing severe health impacts for residents.
