Key Points

• Following the recent heat wave, Météo France issued a yellow heat wave alert for all departments in the region starting on June 19. This alert was then upgraded to orange for the Aisne and Oise departments on June 21, before being extended to all other departments the following day.
• A regional analysis of emergency care utilization shows an increase in the iCanicule composite health indicator (which includes hyperthermia, dehydration, and hyponatremia) since June 17, with a sharp rise observed on June 22.
• Heat poses a health risk to the entire population. The observed health impacts underscore the importance of implementing preventive measures to mitigate the effects of the heat.