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.

All of that heat and moisture will put much of Upstate New York, including Syracuse, at “extreme” risk from the effects of the heat, according to the National Weather Service.

June 20 marks the first official day of summer, with millions of Americans already under heat warnings. See cities hotter than Florida right now.

The worst of this week’s heat wave is bearing down on Southern California over the next few days.. Forecast. Meteorologists say temperatures could reach between 110 and 115 degrees in the San ...

Enjoy beautiful holiday weekend weather before the first heat wave of the summer arrives in SoCal this time next week, bringing temperatures over 100 degrees. 24/7 Live Los Angeles Orange County ...

With the heat index expecting to surpass 100 degrees is rather unusual - but not unheard of - in New York. But given the recent moderate temperature throughout New York, “this is going to be a ...

If you just started or are in the middle of your half marathon or marathon training plan, summertime weather can become a ...

Philly will be hit by a high heat and humidity wave. Here’s what to expect and how to stay safe. The heat index will soar above 100 degrees early next week. Older adults, people with heart issues and ...

Summer 2025 is off to a hot start with a heat wave stifling much of the US this week. Use this tool to track the risk in your area. Track the Heat Wave and Your Risk With This Easy CDC Tool - CNET ...

LOS ANGELES — A long-running heat wave that has already shattered previous records across the U.S. persisted on Sunday, baking parts of the West with dangerous temperatures that caused the death ...