Hamilton’s Medical Officer of Health has issued a Cold Weather Alert.
The city has notified community agencies who work with vulnerable and homeless people.
Each of those agencies, including the Salvation Army, will implement their policies and procedures regarding cold weather.
A Cold Weather Alert is called when current or anticipated weather conditions are at or below minus 15 degrees Celsius or minus 20 with the wind chill.
Wednesday’s forecast high is minus 9 and will dip to minus 14 overnight.
The alert is in effect until further notice.