Flights cancelled or delayed
The weather also was a headache for airline customers, including dozens who spent hours aboard stranded planes on the tarmac at Pearson International Airport.
Because of a backlog, the planes were forced to sit on the tarmac and wait for gates to open so the passengers could exit.

Police ask drivers to stay off streets, highways
Whiteout conditions west of the city have prompted police to ask motorists to stay off streets and highways.
In a release sent out at around 10 p.m., Halton police said they are dealing with a number of accidents in the Milton and Halton Hills areas. Motorists that can avoid driving tonight are being encouraged to do so.

School boards warn of possible morning delays
School boards in the city are warning parents of potential delays Tuesday morning as a result of the frigid conditions.
School buses have been cancelled in some districts due to the weather.