The Mid-Ohio Regional Planning Commission has issued an air quality alert for July 23 for four central Ohio counties, ...

On June 24, the city released initial air quality test results. But the analysis was flawed, some experts said.

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

Cook County is under a heat watch through Thursday evening. Temperatures could feel like 105-110 degrees Wednesday.

The 'unhealthy for sensitive groups' air quality in Chicago comes as an air quality alert was issued for the entire state of ...

Canadian wildfire smoke lingers in Michigan. Officials issued an air quality advisory in southeast Michigan for July 15.