The 2021 Arizona wildfire season was a series of wildfires that burned across the state of Arizona, United States. Wildfires across the state burned 524,428 acres (212,228 ha) of land in at least 1,773 fires throughout the state,[2] fueled in part by a drought, hot temperatures, and thunderstorms producing dry lightning.[3][4] At one point in late June, over 20 active wildfires were burning across the state.[5][6]
The total acres burned between the start of the year and the end of June was 22% more than during the same period of the preceding season, which itself was the most active in nearly a decade.[7] The spike in wildfires in Arizona during the summer was due to an ongoing megadrought that is occurring in the Southwestern United States, as well as a heat wave with many western cities hitting record-breaking temperatures.[8][9]