Phoenix is enduring an unprecedented March heat wave driven by a stubborn high-pressure ridge that has pushed temperatures well above seasonal norms. The National Weather Service office in Phoenix ...

A record-breaking heat wave tore across the Western United States in late March 2026, pushing temperatures to levels never before seen so early in the year. Near Martinez Lake, Arizona, thermometers ...

A long-duration heat wave is taking shape over the western half of the U.S. and is forecast to stick around in the days ahead. A high-pressure system in place over the West is keeping precipitation ...

Meteorologists are reaching for superlatives to describe an oncoming heat wave so intense and rare for this time of year that it could leave some locations shattering their all-time temperature ...