Local paramedics tell myFM that they were kept busy over the Canada Day long weekend due to the extreme heat.
Officials with Norfolk County EMS say they responded to several calls related to heat stroke.
Several patients showed signs of shortness of breath, fainting or loss of consciousness.
Norfolk EMS say they did not respond to any calls for heat-related illness during the festivities in Port Dover.
Environment Canada says heat warnings will remain in place until a cold front moves in on Friday.
Temperatures are expected to reach 40-degrees with the humidex both Wednesday and Thursday.
Children under four, seniors and those with chronic illnesses are the most at risk when it gets this warm.