By Robb Ellis

CHICAGO (CBS)– Fog is moving in to start the week.

A Dense Fog Advisory is in effect until noon for areas west of the city. Will, Kankakee and Jasper counties are now also included in the advisory.

Monday’s high temperature will be near 37 degrees.

A grey pattern is shaping up this week with 30s for highs, 20s for lows and clouds lingering most days.