Download the UV Index Today app - Get daily UV alerts

UV Index for Hays, MT

Current Hays UV Index

0 (Low)

Last Updated 11 minutes ago

Download the UV Index Today app - Get daily UV alerts

Hourly Hays UV Index

The hourly Hays, MT UV Index forecast for Thursday, March 12th, 2026.

5 Day Hourly Hays UV Index Forecast

Last Updated 1 day ago