Key Points

• The orange heat wave alert began on Friday, September 8, and affected 14 departments in two regions (Centre-Val-de-Loire and Île-de-France). It ended on Monday, September 11. This episode was exceptional in terms of its intensity and duration for the month of September.

• Analysis of emergency care utilization shows a slight increase in the iCanicule composite health indicator (including hyperthermia, dehydration, and hyponatremia) starting on September 5

• 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 heat.