As the U.S. and Canada prepares for a "heat dome," why does hot weather feel so much worse when humidity is high? The answer ...

Temperatures are skyrocketing for the third straight day across the Eastern US, but there’s at least three different ways to say how hot it really is.

As Pittsburgh's temperatures climb toward triple digits, these are the key heat-related weather terms you should know.

Attribution researches the influence of climate change on local weather and impacts. We issues alerts in many instances when the Climate Shift Index identifies a notable extreme weather event ...

The temperature reading in Central Park tied a record for July 2 set in 1966. Some 163 million people, from Missouri to Maine ...

It's not just the heat. Learn why Georgia's humidity makes summer feel more intense and how it affects your body's natural ...

Meteorologist Kevin Skarupa says there will be more extreme heat today but some relief is expected to move into NH later in the holiday weekend.