Coastal heat lingers: SoCal endures record-warm nights amid humid spell
Southern California braces for its hottest week of the year, driven by record-warm nights and unusually high coastal humidity from warm near-shore oceans and the start of El Niño; daytime highs have been milder, but overnight temperatures are pushing records, increasing heat-related risks and stressing power, pets and sleep, with scientists forecasting the warm-night pattern to persist into fall and at least the first half of winter.