Great/extreme heat

The emergency response plan (PIU) in the event of extreme weather conditions defines the actions the government should take in the event of six weather conditions.

The population should adopt the following conduct in the event of high or extremely high temperatures.

Orange vigilance - high temperature warning

temperatures between 32°C and 35°C with an average temperature on the preceding day exceeding 23°C

  • close blinds, curtains and windows during the day and open them at night;
  • drink lots of water throughout the day (1.5 l of water per day);
  • avoid going outside during the hottest time of day (11 am to 9 pm);
  • cover your head when going out;
  • wear light clothing;
  • limit physical activity;
  • maintain contact with vulnerable members of your family and friends. Help them get to a cool place;

Red vigilance - extremely high temperature warning

temperatures exceeding 35°C with an average temperature on the preceding day exceeding 23°C

  • close blinds, curtains and windows during the day and open them at night;
  • drink lots of water throughout the day (1.5 l of water per day);
  • avoid going outside during the hottest time of day (11 am to 9 pm);
  • cover your head when going out;
  • 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 regular contact with vulnerable members of your family and friends. Help them get to a cool place;

For more information on extremely hot weather, see the 'Grande chaleur' section of the Luxembourg Health Portal.

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