Twenty degrees. That’s about how much temperatures differed in the same town, on the same day, at the same time last summer.A ...

Extreme heat continues across much of California while monsoon storms bring flash flood risks to the Southwest and severe ...

From slowly rusting iron to quick crystals, heat packs and hand warmers use simple but clever chemistry to keep you toasty.

This week's heat dome and Canadian wildfire smoke are creating unhealthy conditions for millions of people across the United ...

A heat dome stretching from Arizona to Montana is expected to be relatively short-lived, National Weather Service meteorologists said.

Heat waves are simultaneously hitting Europe, North America, and Asia, driven in part by the hot waters in the tropical ...

As Arizona faces what could be its hottest week of the year, several online tools are available to help residents stay safe.

A major new heat wave will peak in Southern California over the next few days, bringing dangerous conditions and fire dangers ...

An unusually intense and early season heat wave has shattered March temperature records across much of the U.S. Southwest and beyond, as a massive heat dome grips the region and sends temperatures ...

When you're trying to lower your utility bills, you might be tempted to reach for the thermostat. That's a good instinct. Setting your thermostat strategically can help reduce your heating or cooling ...