Key Points

• According to Météo France, the Bourgogne-Franche-Comté region experienced a heat wave from Sunday, June 29, to Thursday, July 3: all 8 departments were placed under an orange alert during those 5 days, with the Yonne department even moving to a red alert on July 1 and 2.

• A regional analysis of emergency care utilization during this heatwave indicates an increase in the iCanicule composite health indicator (which includes hyperthermia, dehydration, and hyponatremia). This trend falls within the expected fluctuations for the current meteorological context (particularly compared to the summer of 2023) and is observable across the region as a whole, except on July 2, which marked a peak in care utilization with an increase in the proportion of people aged 75 or older (which persisted on July 3) and an increase in emergency room visits in the Yonne department for iCanicule.

• Heat poses a health risk to the entire population. The observed health impacts underscore the importance of implementing preventive measures to anticipate and mitigate the effects of heat.