Portland, OR – Drivers across the Willamette Valley and southwest Washington are urged to use caution this morning (Wednesday, October 29, 2025) as dense fog continues to blanket the region, significantly reducing visibility on roadways.
According to the National Weather Service in Portland, visibility has dropped to less than one-quarter mile in some locations, affecting the Portland/Vancouver metro area, Salem, and Eugene. The advisory remains in effect through 11 a.m. PDT, though some areas may see gradual clearing sooner.
The fog is expected to create challenging driving conditions along major corridors, including I-5, I-205, and Highway 99E, especially in low-lying areas and near rivers. Motorists are advised to slow down, use low-beam headlights, and avoid sudden stops. Pedestrians and bicyclists should wear reflective clothing and stay alert, as visibility remains poor during the morning commute.
Weather officials remind residents that fog-related crashes are common during early morning hours and urge patience on the roads until conditions improve later today.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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