Heat warning – Red alert level issued for Wednesday, 2 July 2025 (01.07.2025)

The Weather Risk Assessment Unit (CERI) met late this morning to analyse the weather forecast issued by MeteoLux for 2 July. According to forecasts, a red alert is expected between 12:00 and 20:00 in the south of the country and urban areas, due to maximum temperatures likely to reach between 35 and 38 degrees.

With the move to a higher alert level, the CERI is providing information on the advice of behaviour:

• Drink lots of water throughout the day (min. 1.5 l water per day);
• Avoid going outside (prolonged and direct exposure to sunlight) during the hottest time of day (11 am to 9 pm);
• Close blinds, curtains and windows during the day and open them at night;
• Cover your head if you go outside;
• Wear light clothing;
• Limit physical activity;
• Use fans or air conditioning to cool yourself down;
• Try to stay in a cool or air-conditioned place (large shops, cinemas, etc.);
• Cool down with water several times a day (mister, shower, etc.);
• Maintain contact with vulnerable members of your family and friends. Help them get to a cool place.

The CERI will meet again on the morning of 2 July to assess the situation and provide further information as developments unfold.

For more information : www.infocrise.lu ; www.lu-alert.lu

Issued by : Haut-Commissariat à la protection nationale / MeteoLux / ministère de la Santé et de la Sécurité sociale / ministère de l’Éducation nationale, de l’Enfance et de la Jeunesse/ ministère de la Famille, des Solidarités, du Vivre ensemble et de l'Accueil / ministère des Affaires intérieures / Corps grand-ducal d’incendie et de secours (CGDIS) / ministère du Travail / Inspection du travail et des mines (ITM)