Level 4 heat warning: severe heat strain in Blenio
This warning was lifted on 05.08.2026 20:00 CEST and is no longer active.
Summary
A level 4 of 5 heat warning is in effect for Blenio. Persistently high temperatures are putting significant strain on health.
What hazard threatens
Extreme heat places heavy strain on circulation and health, especially for the elderly, infants and the sick; the risk of forest and wildfires is also rising markedly.
Local weather conditions
Measuring station S. Bernardino, 1639 m a.s.l., 19 km from the event
21.0 °C
23.6 °C
64 %
Day of warning and following days
- Wed 29.07. 24° 12° 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 and impact is high. Prepare in advance using the linked guide on protection from heat and drought.
What to do now
Drink enough, avoid the midday heat and physical exertion outdoors. Keep living spaces cool by ventilating at night and in the morning and shading during the day. Look after vulnerable people around you and observe outdoor fire bans.
Risk matrix
Event location
- Coordinates · WGS84
- 46.5168° N, 8.9519° E
- 46°31′00.6″ N 8°57′06.7″ E