UV Index Today in Washington County, Oregon (OR)
Tuesday, April 7, 2026 - 1:46 AM PDT (GMT-7)
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The average maximum UV Index today across 29 locations in Washington County, Oregon (OR), is 5.3. The highest projected maximum is 5.4 in Gaston at 1:00 PM PDT, while the lowest projected maximum is 5 in Wilsonville at 2:00 PM PDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 5.6. The highest projected maximum is 5.7 in Gaston at 1:00 PM PDT, and the lowest projected maximum is 5.6 in Portland at 1:00 PM PDT.
29 Places in Washington County, Oregon (OR)
Maximum UV Index Today