The heat wave caused disruptions to public transport across the Northeast. Amtrak said it will be forced to slow train speeds between 12 p.m. and 8 p.m. on June 24 between Washington, D.C., and New ...

Heat waves are primarily caused by high-pressure systems that push warm air down onto an area and hold it there. During heat ...

More than 160 million Americans are under the highest level of extreme heat alerts during a wave of above-average ...

A heat wave will bring the highest temperatures of the year so far, with some areas possibly reaching triple digits, ...

The moisture evaporating from the moist ground will add to the already humid atmosphere and make for junglelike conditions ...

Dangerous storms and extreme heat will affect millions this week from the Midwest to the Northeast, with flooding and high ...

Three people were killed by tornadoes in North Dakota and cities like Washington, D.C. and New York City will see near triple-digit temperatures early next week ...

Last summer, a heat dome “broiled” the Northeast and Midwest. This summer, it’s coming for big cities in the central U.S. and along the East Coast, along with horrible humidity that makes being ...

Heat dome will cause dangerously high temperatures in many places across the country this weekend, especially the Midwest and ...

Record-breaking heat indices — a combination of temperatures and humidity to determine how heat really feels to the body — are possible from Kansas City to Maine.

Unless society stops pumping more greenhouse gases in the air, “we can expect multiple factors to worsen summer extremes,” a ...

Record-smashing daytime temperatures near 100 degrees are expected for millions from the Plains to the East Coast this week, while nighttime temperatures may stay above 80 in some metropolitan areas.