Toronto Public Health issues warnings for high heat or humidity that is expected to last two or more days. During this time, heat warning information (located above) will be updated daily to reflect the current status. Toronto Public Health follows a provincial Harmonized Heat Warning and Information System for dealing with heat events in the City of Toronto.
Toronto Public Health staff will monitor this system to determine when the Medical Officer of Health should declare a heat warning or extended heat warning. This coordinated provincial system provides a consistent approach for processing and issuing heat warnings in Ontario. It also provides evidence-based heat warning triggers which are based on the association between temperature, humidex and mortality.
During Hot Weather Conditions
Please call or visit family, friends and neighbours, especially isolated seniors to make sure they are alright.
Other groups at risk include:
- people with chronic and pre-existing illnesses
- infants and young children
- people on certain medications
- those who are marginally housed or homeless
Report to the City of Toronto Board of Health on strategies to increase access to cooling for tenants of apartment buildings during extreme heat.
Options for Reducing Risk from Extreme Heat to Vulnerable Populations Living in Multi-unit Residential Buildings
Research report commissioned by Toronto Public Health, written by ICLEI Canada, provides an overview of technologies available to cool apartment buildings, and strategies being used in other cities.
Report summarizes findings of a workshop held March 27, 2015 on strategies to reduce the risk from extreme heat in Toronto's multi-unit residential buildings that do not have air conditioning.