America's largest July 4 celebration ended with a world-record fireworks display, but not before the combination of record-breaking heat and sudden severe weather sent hundreds of attendees to medical personnel and forced a mass evacuation of the National Mall.
Between midnight on July 3 and midnight on July 4, 2026, agencies logged 699 total patient contacts and dozens of hospital transports directly from the National Mall event area, according to data released by the National Special Security Event Joint Information Center. That figure encompasses:
