The nation is marking the 250th anniversary of the United States Declaration of Indpendence.
The widespread extreme heat is fueling another round of severe weather, impacting a large swath of the country as July Fourth celebrations continue Saturday afternoon and evening.
For Philadelphia, into New Jersey and New York City, the watch there is set to remain in effect until 11 p.m.
High temperatures Sunday will be in the upper 80s in New York City and only reach the mid-70s in Boston.
As America begins to celebrate its 250th birthday on Saturday, there are nearly 800,000 customers without power as outages are reported across multiple states.
"Due to temperature-related conditions, Trains 88, 106, 107, 142, 159, 163, 666, 667, 694, and 695 are canceled in their entirety.
The delay is the latest weather-related schedule change from Freedom 250 as Washington, D.C., faces another day of dangerous triple digit heat. »