A heat warning has been issued by Environment Canada for Peterborough and surrounding area as high temperatures are expected Tuesday and Wednesday.
Daytime high temperatures are expected to reach 31 degrees Celsius, with humidex values in the high thirties for both Tuesday and Wednesday.
An overnight low of 20 degrees Celsius is not expected to provide relief from the heat on Tuesday night.
Lower temperatures of 25 degrees Celsius with a humidex of 30 are expected on Thursday.
Environment Canada warns that hot and humid air can also bring deteriorating air quality and can result in the Air Quality Health Index approaching the high risk category.
Residents should monitor for signs of heat illness such as swelling, rash, cramps, fainting, heat exhaustion, heat stroke and the worsening of some health conditions.
It is advised that those that are able should remain in cool areas such as a tree-shaded area, swimming pool, shower or bath, or air-conditioned spot like a public building.