- Warning valid below 800 m a.s.l. - Possible impacts: Significant risk of circulatory problems and physical discomfort. - Recommendations for action: Drink at least 1.5 litres per day, preferably unsweetened and non-alcoholic drinks. Keep your body cool: seek shade and cool rooms, protect yourself with suitable clothing, headgear and sunscreen, shade windows and ventilate your home early in the morning. Keep in touch with at-risk people in your neighbourhood. - Highest temperatures and humidity: 33 - 35 °C, 30 - 40 % - Lowest night temperatures: 18 - 21 °C - Peak phase of the event: Wed 12 - Thu 20 - Temporary mitigation: due to thunderstorms on, Fri 31.07.2026