Waukesha County, WI: Current UV Index and Hourly Forecast

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As of 2:22 PM CST on January 7, 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 Oconomowoc, WI with a reading of 0.8.

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 tomorrow.

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Current UV Index in Cities in Waukesha County, WI

• Big Bend - 0.7
• Brookfield - 0.7
• Butler - 0.7
• Chenequa - 0.8
• Delafield - 0.8
• Dousman - 0.8
• Eagle - 0.8
• Elm Grove - 0.7
• Hartland - 0.7
• Lac La Belle - 0.7
• Lannon - 0.7
• Menomonee Falls - 0.7
• Merton - 0.7
• Mukwonago - 0.8
• Muskego - 0.7
• Nashotah - 0.8
• New Berlin - 0.7
• North Lake - 0.7
• North Prairie - 0.8
• Oconomowoc - 0.8
• Oconomowoc Lake - 0.8
• Okauchee Lake - 0.7
• Sussex - 0.7
• Vernon - 0.7
• Village of Waukesha - 0.7
• Wales - 0.7
• Waukesha - 0.7