Key Points

• The fourth heat wave—short-lived and limited to a single department—began in the Provence-Alpes-Côte d’Azur region on September 5, with the Vaucluse department placed under an orange heat wave alert. It ended today (September 8, 2026).
  During this heatwave, the departments of Alpes-Maritimes, Bouches-du-Rhône, and Var were placed under a yellow heatwave alert by Météo France.
• A regional analysis of emergency care utilization shows a decrease in activity for the iCanicule composite health indicator in emergency departments since the start of the heatwave and stable levels at SOS Médecins clinics.