PHILADELPHIA (WPVI) -- Many will tell you the best way to stay warm is to stay inside. Well, when you don't have a home, inside is not an easy option.
The City of Philadelphia is in a Code Blue until 6 a.m. on Tuesday, Jan. 10. It's enacted in extreme cold, triggering efforts to shelter anyone who needs it.
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If you see someone who needs shelter, city officials say contact Project Home at 215-232-1984 or Philadelphia police.

AP
FILE: Project H.O.M.E. Outreach Response Worker Sam Santiago encourages Carl, a homeless man, to come in out of the cold, Tuesday, Jan. 7, 2014, in Philadelphia. (AP Photo/Matt Rourke)