Extreme Cold Weather Alerts
The Medical Officer of Health will issue Extreme Cold Weather Alerts when Environment Canada forecasts a temperature of -15 °C or colder or a wind chill of -20 or colder in the City of Toronto.
Extreme Cold Weather Alerts may also be issued at warmer temperatures when Environment Canada's weather forecast includes factors that increase the impact of cold weather on health such as precipitation, low daytime temperatures, or several days and nights of cold weather in a row.
During Extreme Cold Weather Conditions
Please call or visit vulnerable family, friends and neighbours, especially isolated seniors to make sure they are alright.
Other groups at risk include people with pre-existing heart conditions or chronic respiratory illness, infants and young children, people on certain medications, people who work or do physical activities outside for extended periods, and those who are marginally housed or homeless.
Exposure to extreme cold weather can be harmful to your health. Read more about cold related illness and how to stay warm and healthy this winter.