As many as seven Chicago-area schools had announced delays, closures or e-learning Tuesday due as a cold weather advisory continues.

According to the National Weather Service, wind chills as low as -30 degrees were possible in some parts Tuesday morning, with sub-zero wind chills to continue throughout the day. The high temperature Tuesday was expected to be 9 degrees, the NBC 5 Storm Team said.

In Northwest Indiana, Lake Station Community Schools announced all LSCS schools would close Tuesday "due to the extreme weather." No e-learning would take place, but a makeup day was scheduled for April 21, 2025.

Several other area schools announced e-learning or delayed starts due to the conditions, including District #103 Lyons, District #148 Dolton West, and District #86 Joliet Public Schools.

"Chicago Public Schools’ goal is to always have schools open," a post on its website said. "We don’t want students to miss valuable learning time and meals they may depend on as part of the school day. Therefore, CPS will do everything possible to keep classes in session as long as it is safe for students and staff."

Early Tuesday morning, temperatures clocked in at -4 degrees in Chicago, with wind chills between -25 and -30 in parts to the west. While the high temperature will warm to 9 degrees, wind chill values will stay below zero through the afternoon, NBC 5 Meteorologist Alicia Roman said.