Drive Portland to Seattle Now or Wait?

We compared today's departure windows for Portland to Seattle (174 miles via I-5) and graded each one for live weather, traffic, and hazards. Pick the safest window in seconds.

Why timing matters on this route

Portland to Seattle crosses I-5 where freezing rain, I-5 ice storms, pacific atmospheric rivers are recurring winter hazards. A 2-hour delay on a stormy morning can drop your risk score from danger to caution; a 4-hour delay can shift you from black ice exposure to clear roads.

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