The National Weather Service Chicago has issued warnings of "fire and ice." There are twin warnings for fire danger Monday and for below-freezing temperatures early Tuesday morning.
The NWS has issued a Red Flag Warning for Kane County and other areas of Northern Illinois.
According to the NWS, a Red Flag Warning means that critical fire weather conditions are either occurring now or will shortly. A combination of strong winds, low humidity and warm temperatures "will create explosive fire growth potential," the NWS Chicago says.
The warning was issued at around 11 a.m. and is in effect until around 7 p.m.
Winds are from the northwest at about 20 to 30 mph with gusts up to 40 mph, the NWS says. Relative humidity is as low as 15 percent. Scanners did report a brush fire on Monday afternoon.
Meanwhile, a Freeze Warning is in effect from 2 a.m. to 9 a.m. Tuesday.
The temperatures will get to 29 to 32 degrees "for several hours late tonight."
Sensitive vegetation may be damaged or killed by the freezing temperatures.