The heat starts to build this afternoon with highs in the mid- to upper 80s and an isolated storm possible. What’s next? It’s ...

A long-duration heat wave is taking shape over the western half of the U.S. and is forecast to stick around in the days ahead. A high-pressure system in place over the West is keeping precipitation ...

Record-breaking temperatures this week signal a potentially dangerous summer ahead, as forecasters predict a 'super' El Niño ...

Research shows that high temperatures can worsen air pollution, increase ground-level ozone, trap harmful particles in the ...

The heat wave across Pennsylvania has led to near-record temperatures in the southeastern portion of the state this week. But ...

Lower temperatures than previously thought are required to place potentially lethal stress on the human body during extreme heat waves, a recent study found. A new physiological model that accounts ...