Porterfield died Monday of natural causes after a short illness.
He started his Chicago broadcast career at WBBM in 1964 and worked there for 21 years before moving to ABC owned WLS in 1985. He worked at WLS for 24 years before returning to WBBM in 2009 and retired in 2015 at 87.
His well-known segment Someone You Should Know focused on regular people who did interesting things, often for charitable reasons.
“He was one of the kindest human beings ever,” said former WLS anchor Linda Yu. “There was always such a comfort, whether you saw him in the newsroom or were sitting next to him at the anchor desk, there was a kindness that made you feel warm and safe.”
Porterfield is survived by his wife, four children, one grandchild and a great grandchild. His funeral will be private, but a public memorial will be planned for later.