Salt Lake County, UT: Current UV Index and Hourly Forecast

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As of 2:32 PM MDT on August 7, 2025, all 24 cities in Salt Lake County, UT in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Alta, UT with a reading of 9.8.

Over the next 24 hours, the highest UV Index reading in Salt Lake County, UT is expected to be 9.8 in Alta between 2:00 PM - 3:00 PM MDT today.

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Current UV Index in Cities in Salt Lake County, UT

• Alta - 9.8
• Bluffdale - 9.3
• Brighton - 9.8
• Copperton - 9.3
• Cottonwood Heights - 9.6
• Draper - 9.6
• Emigration Canyon - 9.3
• Granite - 9.6
• Herriman - 9.3
• Holladay - 9.3
• Kearns - 8.9
• Magna - 8.9
• Midvale - 9.3
• Millcreek - 9.3
• Murray - 8.9
• Riverton - 9.3
• Salt Lake City - 8.9
• Sandy - 9.6
• South Jordan - 9.3
• South Salt Lake - 8.9
• Taylorsville - 8.9
• West Jordan - 9.3
• West Valley City - 8.9
• White City - 9.6