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 different weather conditions, including great/extreme heat.

Orange vigilance - great heat warning

temperatures between 33°C and 35°C with an average temperature on the preceding day exceeding 23°C

The possible consequences include:

• a risk of health problems, in particular for
  • older people,
  • children,
  • people with chronic illnesses or mental health issues,
  • people who have to take medication,
  • and people living on their own;
• dehydration or heatstroke with the following symptoms:
  • a temperature over 40°C,
  • hot, red and dry skin,
  • headaches,
  • nausea,
  • drowsiness,
  • intense thirst,
  • confusion,
  • convulsions,
  • loss of consciousness.

Red vigilance - extreme heat warning

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

The possible consequences include:

• a general risk of health problems, even for people in good health;

the people at particular risk include:

• older people,
• people with disabilities,
• people with chronic illnesses,
• people with mental health issues,
• people who take regular medication,
• people living on their own;
• children;
• dehydration or heatstroke with the following symptoms:
  • a temperature over 40°C,
  • hot, red and dry skin,
  • headaches,
  • nausea,
  • drowsiness,
  • intense thirst,
  • confusion,
  • convulsions,
  • loss of consciousness.

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