Forecasters issued a dense fog advisory through 10 a.m. Tuesday morning.
The most desnse fog will blanket the region through the late morning.
The National Weather Service says visibility will be as low as a 1/4 of a mile in Sacramento, Stockton and Modesto.
The rest of the week is expected to be dry except for some chance of precipitation across the northern portion of the state beginning Thursday night.
-Capital Public Radio