A 'heat dome' is driving dangerous heat across the U.S. into the July 4 weekendBy Chandelis Duster (NPR)June 29, 2026 2:07 p.m.📨 Daily news in your inboxSign up today for OPB’s “First Look” – your daily guide to the most important news and culture stories from around the Northwest.EmailPlease leave this field blankSign up