Download the UV Index Today app - Get daily UV alerts

UV Index for Defiance, IA

Current Defiance UV Index

0 (Low)

Last Updated 42 minutes ago

Download the UV Index Today app - Get daily UV alerts

Hourly Defiance UV Index

The hourly Defiance, IA UV Index forecast for Tuesday, April 7th, 2026.

5 Day Hourly Defiance UV Index Forecast

Last Updated 1 day ago