KLOT NEXRAD Weather Radar near Romeoville, Illinois — operated by NWS Chicago. Live local radar coverage for Chicago, Joliet, Naperville, Aurora, Elgin, Gary, Hammond, Kankakee, Rockford, Waukegan. Counties served: Cook, Will, DuPage, Kane, Lake, Kendall, Grundy, Kankakee, DeKalb, McHenry, LaSalle, Lake (IN), Porter, LaPorte, Newton, Jasper. View real-time reflectivity, base velocity, storm-relative velocity (SRV), spectrum width, correlation coefficient (CC), differential reflectivity (ZDR), differential phase (KDP), VIL, echo tops, and composite reflectivity. Track severe thunderstorms, tornadoes, hail, and winter weather with weather alerts from the National Weather Service. Features include dual-pane NEXRAD radar comparison, radar animation playback, live streaming radar updates, and ProbSevere storm cell tracking. Romeoville Illinois weather radar, Chicago local radar, Illinois storm tracking, Illinois weather alerts. VectorWX provides high-fidelity Level 2 NEXRAD radar data for Illinois and surrounding areas.