Environment Canada has placed the Greater Toronto Area and surrounding cities under a heat warning, saying dangerously hot ...

Warning of the potential of triple-digit temperatures and conditions that could make it feel like it’s 108, the National ...

The Big Apple will be burnt to a crisp during a four-day heat wave — with record-breaking temperatures lasting until ...

Extreme heat above 90°F reduces cognitive performance by 10-15% through reduced brain blood flow, dehydration, and stress ...

Chicagoans can expect intense heat compounded by muggy humidity for the next several days. The National Weather Service has ...

It'll be a very hot and steamy weekend with extreme heat warnings in most of the state after severe storms hit the region ...

Friday will be sunny and pleasant with lower humidity before the heat builds - with the hottest days expected Monday to ...

Central Pennsylvania is bracing for a significant and dangerous heat wave set to begin Sunday, with temperatures climbing ...

NWS issues Extreme Heat Warning for parts of east central and southeast Pennsylvania with a high of 108 degrees expected.

An EXTREME HEAT WATCH is in place Sunday through Tuesday. Heat index values are likely to exceed 100.

Pittsburgh faces Extreme Heat Warning with index values above 100F, and a potential for record highs and severe weather.