Key Points

• According to Météo France, the heat wave will continue across the entire country over the next two days, with a possible gradual shift toward Brittany on Friday.
• A regional analysis of emergency care utilization shows an increase in the iCanicule composite health indicator (which includes hyperthermia, dehydration, and hyponatremia) over the past three days. The current level is close to the peak observed during the heat wave of May 2026.
• Trends in the monitored indicators vary by department, with a rise in indicators particularly noticeable in the departments of Calvados, Orne, and Seine-Maritime.
• 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.