The EPA has an app that tells you what the UV (ultraviolet index) in your area either daily or hourly. The higher the number, the greater risk from overexposure to radiation from the sun and of course, sunburn etc,
As someone with fair skin, I’ve found this to be helpful when we are going to spend time outside. Now, I can choose to be outside when the index number is lower and therefore safer on the skin.
The app is free; just download it from itunes or go to the EPA link for all other options.
Just type in your zip code and you are ready to go no matter where you are!