Polar vortexes are a year-round phenomenon. But Chicago-area residents only notice them when they collapse, experts say. That's what's happening starting Thursday when dangerously frigid air from ...

When will the first frost be in Illinois? Find out when you should bring in your plants for the season.

Twenty-six states across the U.S. are under wind-chill warnings resulting from a weather phenomenon known as the polar vortex, which is described as a moving pool of cold air tens of thousands of feet ...

With frigid temperatures sweeping into the region, Chicagoans are being asked to take precautions and make alternate plans as the brutal cold closes area schools and sinks plans for a weekend polar ...

An Arctic front is moving into the Chicago area, bringing the coldest weather since the 2019 Polar vortex. An Extreme Cold Warning issued by the National Weather Service Wednesday was by Thursday ...

In a new outlook from the National Weather Service, the Chicago area appears to be in for a potentially "active" start to December. The latest predictions, released Thursday, indicate the region is in ...

It's a cold morning across the Midwest and Northeast. Not record-shattering cold, though. After days of stunningly bitter winter weather that sent temperatures plummeting as low as 56 degrees below ...

Every year, weather enthusiasts eagerly watch and wait for signs that the polar vortex, a mass of cold air spinning around the Arctic, might meander south, sending cold and snow into the lower ...

It’s hard to write with mittens on and your teeth chattering, but you count your blessings if you don’t have to work outdoors during another polar vortex. Thinking warm thoughts during this current ...