Arizona UV Index

Live UV index and hourly forecasts for 4 cities in Arizona. Phoenix sees the state's strongest sun with an average UV index of 9.1, while Tucson leads with about 350 sunny days a year.

UV Index in Mesa Avg UV 9.0 · 301 sunny days/yr · Peak: April - September UV Index in Phoenix Avg UV 9.1 · 330 sunny days/yr · Peak: April - September UV Index in Scottsdale Avg UV 9.0 · 299 sunny days/yr · Peak: April - September UV Index in Tucson Avg UV 8.9 · 350 sunny days/yr · Peak: April - September

Looking for a different Arizona city? Use the UV search tool on our homepage for live UV data anywhere in the US, or browse all cities.