A cold weather advisory remains in effect until 1 p.m. Wednesday.
Very cold Real Feel temperatures below zero are possible, and an extreme cold warning is in effect until 1 p.m. tomorrow for dangerously cold wind chills in the higher elevations of Fayette, Westmoreland and Indiana counties.
Overnight Tuesday into Wednesday, lows are forecast around -10 with wind chills pushing -20 or -25 degrees.
Over 300 schools in Southwestern Pennsylvania adjusted their schedules with many already planning on remote learning, delays or cancelations on Wednesday.
In addition to schools, the frigid conditions have resulted in the closings of Allegheny County's Court of Common Pleas, Magisterial District Courts and Pittsburgh Municipal Court.
Arraignment Court is open and issuing emergency Protection from Abuse Orders.
Warming centers are open, with extended hours around the region.
The high on Wednesday will reach 14 with a low of 5 Wednesday night.
Temperatures will start to get to near normal levels on Thursday, with a high of 27.