Download the UV Index Today app - Get daily UV alerts

UV Index for Sylvester, WI

Current Sylvester UV Index

0 (Low)

Last Updated 23 minutes ago

Download the UV Index Today app - Get daily UV alerts

Hourly Sylvester UV Index

The hourly Sylvester, WI UV Index forecast for Sunday, May 24th, 2026.

5 Day Hourly Sylvester UV Index Forecast

Last Updated 1 day ago