Ottawa Public Health has issued a frostbite warning for Ottawa.

The warning is issued when the forecast calls for a windchill of -35 degrees or colder.

CTV's JJ Clarke says there's no relief from the frigid Arctic air until the weekend.

"This is shaping up to be the coldest night of the year", said Clarke.

Exposed skin can freeze in less than ten minutes.  Ottawa Public Health says there's also a risk of hypothermia for people who stay exposed to cold weather for a long period without proper winter clothing.

The frostbite warning will be in effect until the morning of January 24th.