The National Weather Service has issued an extreme heat warning for much of northwest Oregon and southwest Washington, in effect until 10 p.m. Tuesday.
Daytime highs are expected to range from 97 to 102 degrees, with overnight lows staying warm at 63 to 70 degrees. The warning covers the Greater Portland–Vancouver metro area, the Western and Central Columbia River Gorge, Corbett, Hood River Valley, the Central and Southern Willamette Valley, and the foothills of the Northern and Central Oregon Cascades.
Forecasters say Monday will bring the hottest temperatures, especially from Corvallis southward, before cooling begins Tuesday night into Wednesday.
Officials urge residents to drink plenty of fluids, avoid strenuous activity during the hottest hours, and check on vulnerable neighbors. Keep windows closed during the day and open at night unless smoke from wildfires affects air quality.
Never leave children or pets in cars, as interiors can reach deadly temperatures within minutes.
