The UV Index provides a measure of the sun's ultraviolet radiation, a short wavelength of light invisible to humans, that can ...

July is UV Safety Awareness Month, and medical experts say that if you do not take precautions, you can still get a sunburn even when the sky is not totally clear.

1-2 UV value (low): A UV Index reading of 2 or less means low danger from the Sun's UV rays for the average person: Wear sunglasses on bright days. In winter, reflection off snow can nearly double ...