A collapsing polar vortex brings Arctic blast to Chicago area. How long will it last?

Source Chicago Tribune
Original Load Date Jan. 22, 2026, 6 a.m.
Last Updated Jan. 22, 2026, 6 a.m.
Original URL https://www.chicagotribune.com/2026/01/22/polar-vortex-chicago-arctic-subzero/

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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. Already have an account [ Log In ][3] This article is only available to subscribers Flash Sale ### Standard Digital $1 for 1 year [ ...