PINELLAS COUNTY, Fla. - Public Works Air Quality Division of Pinellas County has issued an Air Pollution Precautionary ...

The red-level air quality index (AQI) category—covering values from 151 to 200—means the air is unhealthy for everyone, not ...

Residents in Kansas and Nebraska are facing "unhealthy" levels of air pollution on Wednesday, according to officials.

A new study has found a direct link between early-life exposure to ground-level ozone and asthma or wheezing in young children.

Senior writer Chris DeWeese edits Morning Brief, The Weather Channel’s weekday newsletter.