The United States is celebrating the 250th anniversary of its independence today with events taking place across the country despite an intense heatwave affecting millions of residents. The milestone comes at a time of political division, with extreme temperatures forcing changes to some parades and public celebrations.

Meanwhile, Donald Trump is expected to lead the celebrations with a major rally in Washington, featuring military flyovers and a large fireworks display. The U.S. president said he would deliver a lengthy speech despite the extreme heat, describing the occasion as a historic celebration of the nation's 250 years of independence.