Southwest heat dome pushes March heat past records in Arizona
A March heat record was shattered near Martinez Lake, Arizona, as temperatures reached 110°F, the hottest March day in U.S. history for the month. The prior 108°F March record (set in Texas in 1954 and tied in 2020) was surpassed, with forecasters warning that a persistent West heat dome could bring more record highs into the weekend and into the Plains. The heat is being amplified by El Niño and marine heat waves, signaling an ongoing pattern of extreme warmth with millions facing 90°F heat in coming days.
