Environment Canada is advising motorists to use extra precaution on the roads as "widespread dense fog" is expected to develop overnight.
The fog will begin to blanket parts of the city beginning Monday evening and will last until Tuesday morning.
Fog advisories are issued when near zero visibility is expected or occurring. Environment Canada is urging motorists that if visibility is reduced, to keep a safe distance between other vehicles and to turn on their lights.
The fog will arrive just as the temperature is expected to be 2 C Monday evening with a chance of rain or drizzle.
More rain is expected Tuesday but will end around noon as it warms up slightly to 6 C.