Portland, Ore. – Dangerous heat will linger across western Oregon and southwest Washington through Tuesday night, with temperatures ranging from the upper 90s to as high as 105 degrees in some valley locations. The National Weather Service says relief won’t come until late Tuesday night into Wednesday, when overnight lows finally dip below 65 degrees in many areas.
According to the National Weather Service in Portland, the Extreme Heat Warning covers the Portland-Vancouver metro area, the Willamette Valley, and the Columbia River Gorge. Warm overnight temperatures—hovering between 63 and 70 degrees—will offer little cooling, increasing the risk of heat-related illness.
Cities including Portland, Salem, Eugene, Vancouver, and Hood River can expect oppressive conditions during peak heating hours between 2 p.m. and 6 p.m. Officials urge residents to stay indoors in air-conditioned spaces, hydrate frequently, and check on vulnerable neighbors. For those without cooling, fans and nighttime ventilation are recommended unless wildfire smoke affects air quality.
Heat will gradually ease starting Tuesday night, but afternoon highs will still reach the upper 80s to low 90s on Wednesday before returning to more seasonal levels later in the week. Warnings remain in effect until 10 p.m. Tuesday.
