Heat warning level 4: Glarus Süd-Grosstal
This warning was lifted on 05.08.2026 20:00 CEST and is no longer active.
Summary
A level 4 heat warning is in effect for Glarus Süd-Grosstal, recorded on 29.07.2026 at 10:00 UTC. High temperatures are placing significant strain on health.
What hazard threatens
Persistently high day and night temperatures place strong strain on circulation and health, especially for the elderly, infants and the sick; the risk of forest and wildland fires is also rising in the Grosstal.
Local weather conditions
Measuring station Elm, 958 m a.s.l., 15 km from the event
25.9 °C
29.5 °C
52 %
Day of warning and following days
- Wed 29.07. 30° 15° 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 rated medium and impact high. Drink enough fluids, avoid the midday heat and physical exertion outdoors, and keep living spaces cool by ventilating during the cooler hours.
What to do now
Check on vulnerable people around you now, shift outdoor activities to the cooler hours of the day, and observe any outdoor fire bans currently in place.
Risk matrix
Event location
- Coordinates · WGS84
- 46.9005° N, 8.9811° E
- 46°54′01.7″ N 8°58′52.1″ E