Download the UV Index Today app - Get daily UV alerts

UV Index for Yankton, SD

Current Yankton UV Index

0 (Low)

Last Updated 10 minutes ago

Download the UV Index Today app - Get daily UV alerts

Hourly Yankton UV Index

The hourly Yankton, SD UV Index forecast for Wednesday, September 9th, 2026.

5 Day Hourly Yankton UV Index Forecast

Last Updated 1 day ago