UV Index Today in Wisconsin (WI)

Tuesday, April 7, 2026 - 3:45 AM CDT (GMT-5)

The average maximum UV Index today across 1,516 locations in Wisconsin (WI), is 5.2. The highest projected maximum is 5.5 in Milwaukee at 1:00 PM CDT, while the lowest projected maximum is 4.3 in Liberty Grove at 1:00 PM CDT.

Tomorrow, the average maximum UV Index across those same locations is expected to be 4.1. The highest projected maximum is 5.7 in Prairie du Chien at 1:00 PM CDT, and the lowest projected maximum is 1.1 in Superior at 12:00 PM CDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

72 Counties in Wisconsin (WI)

Average Maximum UV Index Today
  • Brown County - 5
  • Dane County - 5.5
  • Milwaukee County - 5.5
  • Waukesha County - 5.5
Data Source: National Oceanic and Atmospheric Administration (NOAA)

538 Places in Wisconsin (WI)

Maximum UV Index Today
  • Madison - 5.5
  • Milwaukee - 5.5
Data Source: National Oceanic and Atmospheric Administration (NOAA)