How low should you set your thermostat for as record-breaking heat sweeps over the country? Here's what experts and other ...

Even without reaching heat wave levels, sustained high temperatures may contribute to a litany of health issues.

Heat and humidity will once again smother the eastern half of the country this week, pushing the heat index to dangerous levels for tens of millions of people. In the Midwest, the humidity will be ...

The rash of global heat waves across the Northern Hemisphere comes as average global temperatures continue to climb, driven ...

Above 79 degrees Fahrenheit (26 degrees Celsius) the risk of developing heat-related illness rises sharply. While heat exhaustion, when caught, is treatable with fluids, rest, ...

Dangerous heat and humidity is on tap through the weekend!Highs will be in the upper 90s with 100 possible in ...

Growing up in Texas, Mary Beth Walsh thought she was accustomed to high temperatures. Her hometown of Dallas, which is currently being blasted by unrelenting heat, frequently experiences heat waves.