Heat wave upends July Fourth celebrations across US

A dangerous heat wave has disrupted July Fourth events across the United States, including Donald Trump’s flagship Great American State Fair, as the nation prepares to mark its 250th birthday.

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Visitors try to stay cool as they walk along the National Mall as the nation celebrates America's 250th anniversary on July 03, 2026, in Washington, DC
Over ⁠185 million ​people, more than half the US population, were under heat alerts Image: Andrew Harnik/Getty Images/AFP

A dangerous heat wave disrupted July Fourth celebrations on Friday as searing temperatures scorched the eastern United States.

Across the country, “numerous daily temperature records are expected today and Independence Day, with some consecutive-day, monthly, and all-time records possible,” the National Weather Service said.

Peak heat indices could reach 115 degrees Fahrenheit (46 degrees Celcius) in parts of the country.

The heat comes as the US gears up to celebrate on Saturday the 250th anniversary of its independence from Great Britain. 

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Heat disrupts America’s 250th birthday celebrations

Dozens of parades, concerts and ‌fireworks displays have been cancelled or postponed due to sizzling temperatures.

The Great American State Fair on the National Mall in Washington, DC — President Donald Trump‘s flagship event to mark the 250th birthday — was temporarily closed on Friday afternoon as temperatures reached 101 degrees Fahrenheit. 

People watch as two Rockwell B-1 bombers and a Northrop B-2 bomber fly in formation behind the Washington Monument, Ferris wheel and arch during the Great American State Fair on July 03, 2026 in Washington, DC
The Great American State Fair is organized by a foundation called Freedom 250, which is chaired by TrumpImage: Alexi J. Rosenfeld/Getty Images/AFP

Event cancellations have been reported in at least seven states.

In Philadelphia, the Salute to Independence parade was called off after temperatures reached 103 degrees Fahrenheit on Thursday, tying a record high that has stood since 1901.

Authorities warned the heat wave could become deadly, urging those celebrating the Fourth of July weekend outdoors to seek shade, drink water and be alert for signs of heat-related illness. 

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Edited by: Rana Taha

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