Grant County, WI: Current UV Index and Hourly Forecast

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As of 11:37 AM CDT on October 30, 2025, all 22 cities in Grant County, WI in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Platteville, WI with a reading of 1.8.

Over the next 24 hours, the highest UV Index reading in Grant County, WI is expected to be 2.7 in Platteville between 1:00 PM - 2:00 PM CDT today.

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Current UV Index in Cities in Grant County, WI

• Bagley - 1.5
• Bloomington - 1.5
• Blue River - 1.7
• Boscobel - 1.7
• Cassville - 1.6
• Cuba City - 1.8
• Dickeyville - 1.8
• Fennimore - 1.7
• Glen Haven - 1.6
• Hazel Green - 1.8
• Kieler - 1.8
• Lancaster - 1.7
• Livingston - 1.8
• Montfort - 1.8
• Mount Hope - 1.7
• Muscoda - 1.7
• Patch Grove - 1.5
• Platteville - 1.8
• Potosi - 1.7
• Sandy Hook - 1.8
• Tennyson - 1.7
• Woodman - 1.7