OEM volunteers fan out across the city whenever the heat index hits 105°, bringing cold water and compassion to those with nowhere to stay cool.

"Corn gets the name corn sweats because corn puts out a lot of water vapor," Glisan said. "That's where we get these ...

Extreme heat blanketed the Chicago area starting Wednesday, with heat index readings expected to be over 100.As the sun went down Wednesday, people got a little bit of relief as they strolled along ...

Thursday will feel like someone left the oven door open! The heat index is expected to reach around 100F as early as noon. Throughout the afternoon, expect the heat index to stay around 105 to 110F.

Asian shares rose Thursday, buoyed by optimism that the U.S.-Japan tariff agreement will be followed by more trade deals. Japan’s Nikkei 225 surged nearly 2% to ...