Summer heat just got turned up a notch − and trapped under a lid. About 100 million people will see 100-degree days the rest of the week.

The National Weather Service has sent out millions of extreme heat warnings, heat watches and heat advisory alerts this week, and expects the alerts to be in effect through the rest of the weekend.

A heat dome​ is trapping over 90 million Americans in extreme temperatures this week with the National Weather Service​ issuing heat alerts from Nebraska to Florida.

The blast of heat prompted advisories across much of Massachusetts, Rhode Island, Connecticut, and in Southern New Hampshire and Maine.

We have been tracking another round of isolated storms this evening. Some of these have brought heavy rain to some areas around the region. Friday: The “cooler” weather is still on tap for the end of the work week.

FOX Weather meteorologists and correspondents shared their top items to stay cool during hot weather. From cooling towels and protective hats to hydration essentials and beauty finds, shop these hot weather must-haves.

Almost 85 million Americans from South Dakota to Texas and North Carolina to Florida are already under extreme heat warnings, watches or advisories.

A heat dome dries out the ground and air above it, which deters thunderstorms, but means drought can begin or worsen. A heat dome is also known as a ridge of pressure, blocking high and death ridge.

Rsing temps and road rage are a costly combo. discover the mental and financial impact on drivers and their car insurance rates.

Dangerous heat is peaking today for millions in the central United States as a heat dome in summer’s hottest month lives up to its reputation — but sauna-like conditions are only just beginning for areas farther east.