GTA authorities reminding motorists to slow down and turn on headlights as visibility on the roads will be challenging this morning.
Near-zero visibility is expected up until sunrise when fog is expected to dissipate.
Police are suggesting drivers reduce speed, turn headlights on full and maintain a safe distance from other vehicles.
Dense fog developed overnight and is expected to continue through until sunrise making way for Clouds, possible showers & 14.
Pearson Airport is also advising travelers, and those picking up travelers, to check flight status as the early morning fog did delay some flights this morning.
— Toronto Pearson (@TorontoPearson) December 23, 2015