Chicago is currently experiencing a cold snap that has made it colder than Antarctica. While McMurdo Station in Antarctica had a relatively mild 27°F (-2.8°C), Chicago’s temperature at O'Hare Airport was just 1°F (-17.2°C), with wind chills making it feel as cold as -15 to -25°F (-26 to -32°C). This extreme cold is the most intense stretch of weather the city has seen in some time. With wind chills reaching dangerous levels, frostbite can set in within 30 minutes for anyone exposed to the elements. Thankfully, temperatures in Chicago are expected to warm up slightly, with highs reaching the mid-20s, and the city will see daytime temperatures above freezing by the weekend. However, the cold snap remains a stark reminder of the harsh Arctic air impacting the region.