Umatilla County, OR: Current UV Index and Hourly Forecast

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As of 1:01 PM PDT on September 20, 2026, out of 22 cities in Umatilla County, OR in our database, 20 cities (91%) have a UV Index reading of Moderate, while 2 cities (9%) have a UV Index reading of High. The city with the highest UV Index reading right now is Ukiah, OR with a reading of 5.6.

Over the next 24 hours, the highest UV Index reading in Umatilla County, OR is expected to be 5.6 in Ukiah between 1:00 PM - 2:00 PM PDT today.

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Current UV Index in Cities in Umatilla County, OR

• Adams - 5.3
• Athena - 5.3
• Cayuse - 5.3
• Echo - 5.2
• Gopher Flats - 5.2
• Green Meadows - 5.3
• Helix - 5.2
• Hermiston - 5.2
• Kirkpatrick - 5.2
• McKay - 5.3
• Meacham - 5.5
• Milton-Freewater - 5.1
• Mission - 5.2
• Pendleton - 5.2
• Pilot Rock - 5.3
• Riverside - 5.2
• Stanfield - 5.2
• Tutuilla - 5.3
• Ukiah - 5.6
• Umapine - 5.1
• Umatilla - 5.2
• Weston - 5.3