Seven states—including Texas, Arizona, and California—are bracing for "extreme" UV radiation levels later this week, according to the EPA.

Warm weather can often bring high levels of ultraviolet (UV) radiation. UV radiation is emitted by the Sun and penetrates the ...

Weather forecasts usually include a UV index, a measure of the intensity of ultraviolet radiation from the sun. The higher the number, the greater the risk to people. Most of the radiation that ...

What April's sun angle means for you Step outside on a sunny April afternoon in Indianapolis and something might surprise you — it is warm! Really warm, considering it was not that long ago we were ...