Key Points

• The Pays de la Loire region was affected by a fourth heat wave in 2026, which began on August 11, 2026, and ended on August 16, 2026. This led to an orange alert being issued for the five departments in the Pays de la Loire region for six days.
• A regional analysis of emergency care utilization shows a moderate increase
  in emergency room visits, hospitalizations following those visits, and SOS Médecins calls for the iCanicule composite health indicator during the heat wave.