An Arizona community beat the all-time hottest March day ever recorded in U.S. history. The old record was set in 1954.

The new heat record is an alarming signal of how hot the planet is getting and how fast it’s happening.

NOAA says spring 2026 will be hotter and drier, with heat domes fueling expanding drought across the West and Plains.

Wind and solar generated a record 17% of electricity in the U.S in 2025.

Around the same time as the heat starts blasting Phoenix, the polar vortex — a system that usually keeps frigid air penned up ...