He is now breathing on his own, with family and healthcare professionals by his side, spokesman Ted Goodman said in a video on X.
The 81-year-old has had respiratory problems since the September 11, 2001, terrorist attacks. At the time, he was mayor and spent considerable time in lower Manhattan, where the air was full of smoke and particulates from the destroyed World Trade Center.
Giuliani, a Republican, became nationally known during the terrorist attacks and later made two unsuccessful bids for the presidency.
In 2016, Giuliani became an advisor to Donald Trump and later became Trump's personal lawyer - including on matters related to alleged election fraud.
