Heatwave

A heatwave is a longer period of extremely warm weather that threatens human health. Heat is particularly a problem when humidity is high. Heat warnings (from Swiss Meteo) are therefore based on a value that incorporates both temperature and relative humidity of the air (heat Index). Dangerous heatwaves occur primarily during prolonged fair weather periods when there is an influx of warm and humid air.

The combination of heat and humidity causes the human body stress and may lead to cardiovascular problems and heatstroke. Heatwaves can threaten the lives of small children, elderly and weak people. During heatwaves, the strain on your airways may increase due to the elevated ozone concentration. A further effect can be bad water quality in standing bodies of water.

• European heat waves, 2022

1. If possible, avoid outside activities and do not put a strain on yourself. Protect yourself against direct sun exposure (shade, clothing, hat or scarf, etc.).
2. Drink a lot of water and eat light meals.
3. If possible, stay in cool buildings and rooms (basement rooms, schools, libraries etc.)

1. Inform yourself via radio and television and follow the instructions given by the authorities and emergency organisations..
2. Call the emergency services only in an emergency.
3. Use the telephone and other important means of communication only for important and urgent requirements (danger of network overload).
4. Use cars and other means of transport only for important and urgent requirements (danger of traffic overload).
5. Act particularly careful in traffic (danger due to breakdown of traffic lights, barriers etc.).
6. Inform and support neighbours and people needing assistance in your vicinity.

• Natural Hazards Portal (heatwave)
• MeteoSwiss
• Federal Office for Public Health (FOPH)
• Federal Office for Civil Protection (FOCP)