Millions and millions of Americans are being warned of "dangerous" heat in more than a dozen states as the summer 2025 season officially kicks off. In parts of the Midwest and Mid-Atlantic regions more than 42 million were under extreme heat watches the morning of June 20,

A sprawling and intense "heat dome" is descending upon the United States, placing millions of Americans under heat advisories and warnings as the summer season officially begins. This is not your average summer warmth;

Weather forecasters have warned of extreme and dangerous temperatures as a major heat wave sweeps across the central and eastern U.S. states.