The Chicago area will see spectacular weather day on Sunday, but some big changes are coming to the forecast as the start of summer arrives.

Why many business owners are considering risky trade-offs that could leave them vulnerable if disaster strikes.

Mild and sunny weather continues in Chicago, but smoke and a nearby front may influence temperatures and bring scattered storms later in the week.

Sunday was shaping up to be decent weather-wise as the air quality continues to improve, but there's a chance of showers and storms.

Tyler Pasciak LaRiviere/Sun-Times file Share The northern lights could be visible in Chicago and other parts of the U.S. thanks to a severe geomagnetic storm. The Space Weather Prediction Center ...

New data says there's an 80% chance the world will break another annual temperature record in the next five years.

An enhanced (Level 3 of 5) severe ... of severe weather. Thunderstorms are possible each day Saturday through Tuesday, though Sunday and Monday could yield the greatest impacts.

The Chicago weather forecast Monday called for a warm and windy day, with a severe weather outbreak across parts of the Midwest threatening to move into Illinois by evening. "Out to the west ...

If Chicago, for example, has stormy weather that lingers past the morning hours, it could prevent severe thunderstorms ... with the potential for “high impacts and life-threatening flash ...