July 2026 marked a historic milestone as the hottest month on record, with extreme weather events highlighting the varied impacts of climate change across the United States. The nation experienced a confluence of heat domes, widespread wildfires, persistent drought conditions, and severe flash flooding.
Wildfires raged across the western U.S., with eastern Oregon alone seeing 140,000 acres consumed by flames, prompting mandatory evacuations for thousands of residents. Federal firefighting resources were strained as blazes also burned in Colorado, Washington, and other regions. The smoke plumes from these fires, combined with those from wildfires in Canada, significantly degraded air quality for millions. By mid-July, Chicago reported the worst air quality in the world.
Despite the prevalence of heat and fire, July was also the third driest on record for the contiguous U.S., with approximately 48.5% of the country experiencing drought. However, this dry spell was punctuated by intense rainfall. In Central Texas, flash floods along the Guadalupe River inundated areas with over 28 inches of rain, resulting in two fatalities. This region had previously experienced catastrophic flooding during the July 4th weekend of the preceding year.
The month's climate extremes underscored the diverse ways climate change is affecting local communities. Residents in Texas and Oregon faced property damage and destruction from floods and fires. Meanwhile, in the Midwest, severe particulate air quality, the worst in over 25 years for some areas, forced people to take precautions for everyday activities. Many sought relief from the oppressive heat by finding shade in tree-lined streets or cooling off in lakes and public water features.