« View county listDense Fog Advisory
Including the cities of Oregon, Dixon, DeKalb, Aurora, Elgin,
Wheaton, Chicago, Ottawa, Oswego, Morris, Joliet, Gary,
844 PM CST Sun Jan 21 2018
...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 6 AM CST MONDAY...
* VISIBILITY...Areas of dense fog will reduce visibilities to
one quarter mile or less.
A Dense Fog Advisory means visibilities will frequently be
reduced to less than one quarter mile. If driving...slow down...
use your headlights...and leave plenty of distance ahead of you.