Central Ohio counties face an Air Quality Alert as ozone levels rise due to high pressure and sunny conditions.

IDEM forecasted Air Quality Action Days indicate anticipated higher levels of ground-level ozone and fine particulate matter only. Other factors may affect overall air quality. Air Quality Action Days ...

Thursday will be one of the hottest days of the week with highs in the mid 90s and heat index values over 100 degrees. There ...

UCLA researchers have launched a new network of air pollution monitors for northwest L.A. areas near the Palisades fire.

Chicago faces an extreme heat watch with temperatures expected to reach mid-90s and heat indexes up to 115 degrees.

As of Tuesday morning, the Air Quality Index in Milwaukee was between 115 to 120, which falls in the "unhealthy for sensitive groups" category.

Canadian wildfire smoke no longer lingers in Michigan as of July 18. Southwest Michigan will experience unhealthy air for sensitive groups on July 21.

Summer heat and more humid conditions are on tap for the middle of the week, along with the potential of impactful storms ...

Canadian wildfire smoke will filter in Sunday afternoon and impact air quality through Monday. Summer heat & storms ahead ...

It's a beautiful end to the weekend with clear skies and comfortable temperatures. An air quality alert remains in place in the northern part of the state.

The Minnesota Pollution Control Agency has issued an air quality alert for northwest, north-central, and northeast Minnesota ...

There will be pleasant summer temperatures for the weekend, with a steamy and stormy heat wave expected next week.