Live updates: Many communities in the Philadelphia region alter July 4th plans due to heat wave

The Philly Pops and Tony Award-winning singer Idina Menzel are performing together Friday night to celebrate the 250th Anniversary of America.

Due to extreme heat, the start time of the concert has been pushed back until 8 p.m.

It will take place at Independence National Historic Park at 6th & Market streets.

The patriotic celebration will feature a headlining performance from the multi-platinum-selling singer/songwriter and Tony Award-winning performer, as well as live orchestral music, and festive cheer in the heart of the nation's birthplace.

Limited seating is available as well as lawn viewing.

Officials in Marple Township, Pennsylvania announced Thursday they have changed the route for the July 4th parade due to extreme heat in the forecast.

The parade will now begin at Radnor Drive instead of Saint Albans Avenue.

It will conclude at Malin Road.

In addition, the Firecracker 5k will now start at 9 a.m. at Malin Road and West Chester Pike.

Officials remind residents in attendance to be sure to hydrate and plan accordingly,

Temporary road closures and traffic delays along the parade route can also be expected.

Skippack Twp. in Montgomery County has canceled its annual 4th of July parade due to dangerous heat in the forecast.

Township officials made the announcement on their Facebook page.

"The safety of our community is always our first priority and we want to thank everyone for their understanding," they said in the post.

Organizers have canceled Philadelphia's Salute to Independence Semiquincentennial Parade that was set to take place on Friday.

Wawa Welcome America made the announcement on social media just hours before the parade.

The event was canceled as the city expects to hit heat index values, once again, between 105-112 degrees, or even higher. The dangerous heat already tied a 103-degree record on Thursday.

This year, the route was supposed to be expanded, but was already cut short due to the heat. It was set to take the floats, 42 marching bands, and other performers down the parkway to Logan Circle.

"The reality is that Mother Nature is Mother Nature," Todd Marcocci, the parade producer, told Action News.

Extreme heat is forcing many event cancellations, including Philadelphia's Salute to Independence parade.