Walworth County, WI: Current UV Index and Hourly Forecast

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As of 1:48 AM CST on January 18, 2026, all 20 cities in Walworth County, WI 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 Walworth County, WI is expected to be 1.5 in Sharon between 12:00 PM - 1:00 PM CST today.

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Current UV Index in Cities in Walworth County, WI

• Allens Grove - 0
• Big Foot Prairie - 0
• Como - 0
• Darien - 0
• Delavan - 0
• Delavan Lake - 0
• East Troy - 0
• Elkhorn - 0
• Genoa City - 0
• Lake Geneva - 0
• Lake Ivanhoe - 0
• Lake Lorraine - 0
• Lauderdale Lakes - 0
• Lyons - 0
• Potter Lake - 0
• Sharon - 0
• Springfield - 0
• Walworth - 0
• Whitewater - 0
• Williams Bay - 0