Waukesha County, WI: Current UV Index and Hourly Forecast

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As of 11:06 AM CST on January 8, 2026, all 27 cities in Waukesha County, WI in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Mukwonago, WI with a reading of 0.9.

Over the next 24 hours, the highest UV Index reading in Waukesha County, WI is expected to be 1.1 in Brookfield between 12:00 PM - 1:00 PM CST today.

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Current UV Index in Cities in Waukesha County, WI

• Big Bend - 0.8
• Brookfield - 0.8
• Butler - 0.8
• Chenequa - 0.8
• Delafield - 0.8
• Dousman - 0.8
• Eagle - 0.8
• Elm Grove - 0.8
• Hartland - 0.8
• Lac La Belle - 0.8
• Lannon - 0.8
• Menomonee Falls - 0.8
• Merton - 0.8
• Mukwonago - 0.9
• Muskego - 0.8
• Nashotah - 0.8
• New Berlin - 0.8
• North Lake - 0.8
• North Prairie - 0.8
• Oconomowoc - 0.8
• Oconomowoc Lake - 0.8
• Okauchee Lake - 0.8
• Sussex - 0.8
• Vernon - 0.8
• Village of Waukesha - 0.8
• Wales - 0.8
• Waukesha - 0.8