Toronto Public Health reports that nearly 40 emergency department visits are linked to the city’s recent heat wave. According to the agency, hospitals recorded a total of 39 heat-related ER visits from June 30 through July 4. The period includes July 4, when Environment Canada issued an orange-level heat alert. Public health officials attribute the increase in visits to heat exposure and say the numbers reflect heat-related presentations to hospital emergency departments during the hottest days. The reports indicate the highest count occurred within that same timeframe, though specific hospital-by-hospital figures are not fully detailed in the provided excerpts. The agency’s message emphasizes that heat can affect people of all ages and that residents should take precautions during extreme temperatures, especially during higher alert periods. The figures are presented as a measure of heat-related demand on emergency services during the heat wave.