Organizers of Washington DC's Independence Day parade abruptly canceled the event late on the eve of July 4, 2026, due to soaring temperatures and a major heat warning issued by the National Weather Service (NWS). The parade, hosted by the National Park Service (NPS), was scheduled to begin at 10:30 a.m. but was called off after extensive consultation with the NPS, Washington DC’s municipal government, and the Trump administration, which has promoted many activities for the country's semiquincentennial.

Blistering heat, worsened by high humidity, has been crippling transport services and stressing the electricity grid along the East Coast for days as the 250th anniversary of the US Declaration of Independence approached. Temperatures in Washington DC were expected to reach 102°F (39°C) with heat index values between 110 and 115°F (43-46°C).

The cancellation is the latest disruption caused by the extreme weather. The related Freedom 250 fair also faced setbacks, including low attendance, a broken ferris wheel, and a delayed opening announced by the event's organizer. On Friday, the fair temporarily closed after 44 visitors were treated for heat-related illnesses. The capital’s NBC affiliate reported that 11 people were hospitalized, seven of whom were in serious condition.

These developments have cast a shadow over the nation's celebrations marking 250 years since the Declaration of Independence.

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