Western U.S. heatwave brings record temps to Phoenix, wildfire risk in Pacific Northwest
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Set us as preferred Yet another heatwave scorched the Western United States Saturday, bringing extreme heat warnings to Southern California and record temperatures in the Southwest and Montana.Portions of the Pacific Northwest, already grappling with an onslaught of large wildfires, were under an exceptionally rare “Particularly Dangerous Situation” warning, indicating fires could exhibit rapid growth due to extremely dry conditions and strong winds.Preliminary temperature readings from the National Weather Service indicated Phoenix reached 117 degrees Saturday afternoon, breaking the record for hottest temperature for today’s date of 116 degrees, set in 1972.It was five degrees short of the area’s all-time record.Las Vegas and El Centro, Calif., were within striking distance of their daily records, and both Great Falls and Helena, Mont., surpassed their daily records in preliminary measurements.Officials in Southern California cautioned residents to look out for signs of heat-related illness, such as dizziness, confusion, headaches and nausea.Extreme heat is one of the deadliest climate risks facing California.
On the hottest days, heat-related illness can account for nearly 1 in every 100 emergency department visits in L.A.County.
In 2025, the county recorded 10 heat-related deaths, according to a new dashboard.Multiple days of high heat — with little relief overnight as temperatures remain high — can increase the risk.“We’ve had these elevated temperatures for the last several days here, and that compounding effect can be significant,” said Rose Schoenfeld, a meteorologist with the National Weather Service.“We have some elevated humidity across the area that increases those overnight low temperatures a bit as well.”The National Weather Service recommends limiting outdoor activity to the early hours ...