Download the UV Index Today app - Get daily UV alerts

UV Index for Harwinton, CT

Current Harwinton UV Index

0 (Low)

Last Updated 4 minutes ago

Download the UV Index Today app - Get daily UV alerts

Hourly Harwinton UV Index

The hourly Harwinton, CT UV Index forecast for Friday, March 27th, 2026.

5 Day Hourly Harwinton UV Index Forecast

Last Updated 13 hours ago