US heat dome puts 200 million-plus Americans under life-threatening heat over July Fourth weekend

More than 200 million Americans are under a life-threatening heat dome this July Fourth weekend; over 160 million are under heat alerts. Record highs hit New York's Central Park (100F), Newark (104F) and Philadelphia (103F); heat indices reach 105-115F from Texas to the coast. Pe

https://www.nbcnews.com/data-graphics/us-extreme-heat-dome-july-fourth-2026-maps-charts-rcna352304