Extreme heat cancels DC Fourth of July parades, fireworks still set to light the sky

Extreme heat in the DC region forces cancellation of the Independence Day Parade and several nearby parades, while the Salute to America on the National Mall is adjusted for heat with viewing zones opening at 5 p.m.; fireworks are still planned around 10:30 p.m. as storms and heat risk loom. Transit and security adjustments are in place, including a Reagan National ground stop and Metro changes, with officials urging heat safety for spectators and participants.