Download the UV Index Today app - Get daily UV alerts

UV Index for Sumas, WA

Current Sumas UV Index

0 (Low)

Last Updated 32 minutes ago

Download the UV Index Today app - Get daily UV alerts

Hourly Sumas UV Index

The hourly Sumas, WA UV Index forecast for Friday, June 5th, 2026.

5 Day Hourly Sumas UV Index Forecast

Last Updated 1 day ago