FAYETTEVILLE, Ark. (KNWA/KFTA) — Summer has officially begun, and the UV index is only getting higher. The UV index, or Ultraviolet Index, is a measure of the strength of ultraviolet (UV) radiation ...

HOUSTON — It's important to protect your skin from harmful sun exposure, but how do you know when to lather on the sunscreen? That's where the UV Index, which measure UV radiation levels, can help.

PHILADELPHIA (WPVI) -- With smoke blowing into the Philadelphia region from the wildfires in Canada, you may have heard a lot about the Air Quality Index or AQI. But what it is, exactly? The Air ...

There has been a lot of talk about air quality levels as nearly the entire tri-state area has been engulfed by smoke coming down from wildfires in Canada. But what do all the numbers actually mean?

Saphia Khambalia asks experts about the air quality index scale and how to apply it to your life in a practical way. Putin ‘immediately’ read Melania Trump’s letter in front of delegates at Alaska ...

The New York State Department of Environmental Conservation’s air-quality health advisory in response to wildfire smoke wafting down from Canada is based on the Air Quality Index, or AQI. The AQI was ...