France is preparing for a significant heatwave, with 49 departments set to be placed on red alert and another 40 on orange alert starting Monday. The national weather service, Météo-France, warns of a particularly warm night between Sunday and Monday, with minimum temperatures potentially reaching 26°C. As a precautionary measure, train services in the Paris region, including RER and Transilien lines, will be suspended beginning Monday. The cancellations aim to prevent issues with tracks buckling under extreme heat and ensure passenger safety. Authorities are urging the public to take necessary precautions to protect themselves from the heat. This disruption impacts commuters and travelers in and around the Île-de-France region. Further updates and specific service alterations will be provided as the situation develops.