What Is The UV Index And Why Should You Care?
1:20
Microsoft NewsThe Weather Channel
What Is The UV Index And Why Should You Care?
Think of the UV Index as your personal sun-safety alert system: It measures how strong the sun’s ultraviolet rays are and how quickly they can damage your skin. This easy-to-understand guide explains everything you need to know about the UV Index, how the numbers are calculated, what exactly they mean, and who comes up with them.
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