Grant County, OR: Current UV Index and Hourly Forecast

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As of 4:58 AM PDT on August 8, 2025, all 9 cities in Grant County, OR in our database have a UV Index reading of 0, indicating no radiation from the sun.

Over the next 24 hours, the highest UV Index reading in Grant County, OR is expected to be 8.9 in Seneca between 1:00 PM - 2:00 PM PDT today.

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Current UV Index in Cities in Grant County, OR

• Canyon City - 0
• Dayville - 0
• Granite - 0
• John Day - 0
• Long Creek - 0
• Monument - 0
• Mount Vernon - 0
• Prairie City - 0
• Seneca - 0