UV Index Today in King County, Washington (WA)
Sunday, September 20, 2026 -9:22 AM PDT (GMT-7)
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The average maximum UV Index today across 72 locations in King County, Washington (WA), is 4.8. The highest projected maximum is 4.9 in Maple Valley at 1:00 PM PDT, while the lowest projected maximum is 4.7 in Kirkland at 1:00 PM PDT.
Tomorrow, the average maximum UV Index across those same locations is expected to be 4.5. The highest projected maximum is 4.5 in Federal Way at 1:00 PM PDT, and the lowest projected maximum is 4.4 in Seattle at 1:00 PM PDT.
72 Places in King County, Washington (WA)
Maximum UV Index Today