O tempo em todos os lugares de Illinóis
C
- Cabery
- Cache
- Cadiz
- St. Louis Downtown Airport Cahokia
- Cairo
- California Park
- Calumet City
- Cambria
- Cameron
- Campton Hills
- Campus
- Canal Trustees
- Canalport
- Carbon Cliff
- Carbondale
- Southern Illinois Airport Carbondale
- Carmi
- Carol Stream
- Carpenters Addition
- Carterville
- Carville
- Cary
- Cedar Lawn
- Champaign
- University Of Illinois-Willard Airport Champaign
- Charleston
- Chatsworth
- Chemung
- Chesterfield
- Chestnut Mountain Resort
- Chicago
- Chicago Heights
- Chicago Lawn
- Chicago Nexrad
- Chicago Ridge
- Chicago Rockford International Airport
- Aeropuerto Internacional O'Hare Chicago
- Aeropuerto Midway Chicago
- Aeropuerto Regional Waukegan Chicago
- Dupage County Airport Chicago
- Estación de Guardacostas de Calumet Chicago
- Meigs Chicago
- Aeropuerto Pal-Waukee Wheeling Chicago
- Chinatown
- Cicero
- Cincinnati
- Cisco
- Cisne
- Cityfront Center
- Cityfront Place
- Clear Lake
- Clifford
- Clifton
- Coal Valley
- Colchester
- Colmar
- Colona
- Columbia
- Como
- Concord
- Conleys Patch
- Cordova
- Cornerville
- Crete
- Creve Coeur
- Cruse
- Crystal Lake
- Cuba
- Cuba
- Cullom