A collapsing polar vortex brings Arctic blast to Chicago area. How long will it last?
- Posted on January 22, 2026
- By Chicago Tribune
- 3 Views
A collapsing polar vortex brings Arctic blast to Chicago area. How long will it last?
The most severe stretch will occur Thursday night into Friday morning, with possible wind chills up to minus 35; subzero temps are also forecast through Sunday.
