Updated @ 7:35 AM EDT on August 25, 2025
A hazardous heat wave is engulfing the West, putting millions of people under heat watches and warnings and raising the risk of fire in the arid conditions.
At least until Tuesday, the National Weather Service (NWS) predicts “extreme heat” in parts of California, Oregon, and Washington state, with highs of over 100 degrees.
“With evening lows staying considerably above normal, many places will not see much respite from the intense heat at night. The NWS warned Sunday that “many nighttime temperature records are likely.”
Extreme heat warnings are also in effect for parts of southern Arizona, where Sunday highs of 110 degrees or more are expected. According to the NWS Phoenix office, overnight lows in the Phoenix metro region will barely drop into the 90s. Additionally, the region is expected to have “very hot temperatures” at least through Monday.
According to the NWS, extreme heat is dangerous not only during the day but also at night when the temperature doesn’t drop.
“Without A/C or cooling, the body can’t recover, increasing the risk of heat illness,” the government cautioned.
Authorities are advising residents in regions under high heat warnings to seek shade or remain in air-conditioned buildings and to stay hydrated with plenty of cool water.
“Check the weather before heading out,” the Oregon Department of Emergency Management posted on social media. “Check on kids, older adults, pets, and livestock.”
Dry weather and the severe heat in the West are combining to increase the risk of fire, which can enable “any fires to quickly spread,” according to the NWS.
Across the West, wildfires are already raging in places like Oregon and Napa County, California, which is well-known for its renowned wineries. As of Sunday afternoon, the Picket Fire was 11% contained after scorching over 6,800 acres in Napa County.
As of Sunday, the Flat Fire in central Oregon has burned over 21,000 acres. Weather conditions are making it challenging for firefighters to contain the fire and stop it from spreading, Oregon Department of Forestry Team 3 Operations Section Chief Eric Perkins said on Sunday.
“The weather isn’t great, and we are engaged in a battle. During a briefing, Perkins stated, “It’s better for the fire than the firefighters today.”
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