This morning will start out really nice and quiet, with clear skies and comfortable temperatures out-the-door. Expect a great ...

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

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

If you have breathing problems, be sure to take it easy on Wednesday and limit outdoor time. Air quality will be unhealthy ...