Central Illinois:
Central Illinois Weather Forecast Office
1362 State Route 10
Lincoln, IL 62656
217-732-3089 (8:30 am to 4 pm weekdays)
Central Illinois NWS website
Chicago:
Chicago, IL Weather Forecast Office
333 West University Drive
Romeoville, IL 60446
815-834-1435 8am-8pm
Chicago, Illinois NWS website