Dangerously cold weather is set to hit Illiana tonight. The National Weather Service says frigid temps are expected, with wind chills as low as 30 below in some areas. A wind chill advisory goes into effect at 6 pm and lasts until noon Friday. A wind chill watch has been issued for other counties during that same time period.

The cold air can cause frostbite on exposed skin in as little as 30 minutes.

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