Chicago-area residents could see rapidly developing dense fog on Tuesday night, which could become more widespread overnight. According to the National Weather Service, a dense layer of marine fog ...

CHICAGO (WLS) -- The Chicago area was under a dense fog advisory Tuesday morning, with visibility down to less than a quarter mile in some areas. The heavy fog and showers were causing hazardous ...

Surprise fog develops on Chicago lakefront CHICAGO (CBS) -- A patch of fog enveloped parts of Chicago Friday afternoon, taking many by surprise in the middle of a sunny, pleasant day.

Chicago-area drivers are urged to be extra careful Friday as dense fog is expected to cause low visibility and dangerous road conditions. The National Weather Service issued a dense fog advisory ...