Chicago plunges into “Chiberia”: Arctic blast brings colder-than-Antarctica temperatures Chicago faces record-breaking cold, with wind chills plunging to -40 F (-40 C), surpassing parts of Antarctica and even some Mars surface temperatures. Officials warn frostbite can occur in under 10 minutes on exposed skin. While Chicago’s air temperature hit -11 F (-24 C), colder spots like Poplar, Montana (-34 F/-37 C) and Khatanga, Russia (-40 F/-40 C) were recorded. However, Antarctica’s East Antarctic Plateau remains Earth’s coldest at -133.6 F (-92 C). The deep freeze results from a weakened polar vortex, allowing Arctic air to spill southward, amplifying extreme cold in…

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