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Heat 4/5 high METEOALARM

Heat warning level 4 issued for Huttwil-Willisau

This warning was lifted on 05.08.2026 20:00 CEST and is no longer active.

Summary

A level 4/5 heat warning is in effect for Huttwil-Willisau. Persistently high temperatures are straining health and circulation.

What hazard threatens

Persistently high day and night temperatures increase the risk of dehydration, heat stroke and circulatory problems, particularly for the elderly, infants and the sick. The risk of forest and wildfires also rises.

Local weather conditions

Measuring station Egolzwil, 522 m a.s.l., 9 km from the event

Temperature

31.0 °C

When the warning was issued · 29.07.2026 12:00 CEST

Daily maximum

35.3 °C

on the day of the warning

Humidity

36 %

When the warning was issued · 29.07.2026 12:00 CEST

Day of warning and following days

  • Wed 29.07. 35° 17° measured

As of: Values as at the time of the warning; they are not updated afterwards.

Source: MeteoSwiss

Context & protective measures

Background: heat waves are becoming more frequent and intense in Switzerland. The greatest danger is the health burden from persistently high day and night temperatures, which favour dehydration, heat stroke and circulatory problems. The elderly, the chronically ill, pregnant women and infants are particularly at risk.

Recommendation

Likelihood is medium, impact is high. Avoid physical exertion outdoors during the midday heat, keep living spaces cool by ventilating in the morning and at night and shading during the day. Pay attention to vulnerable people around you.

What to do now

Drink enough fluids, avoid exertion during midday heat, cool your home and observe any outdoor fire bans in place. Prepare using the guide on protection from heat and drought.

Risk matrix

Event location

Coordinates · WGS84
47.1090° N, 7.9401° E
47°06′32.4″ N   7°56′24.5″ E