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Heat 4/5 high METEOALARM

Heat warning level 4: Sion - Crans-Montana

Unchanged since the first report last verified 18:13 CEST

Summary

A level 4 out of 5 heat warning is in effect for Sion - Crans-Montana. Persistently high temperatures place heavy strain on circulation and health.

What hazard threatens

Persistently high temperatures place heavy strain on circulation and health, particularly for the elderly, infants, pregnant women and the sick; the risk of forest and wildfires in the Sion - Crans-Montana region also rises markedly.

Local weather conditions

Measuring station Montana, 1423 m a.s.l., 5 km from the event

Temperature

23.9 °C

When the warning was issued · 29.07.2026 12:00 CEST

Daily maximum

28.2 °C

on the day of the warning

Humidity

52 %

When the warning was issued · 29.07.2026 12:00 CEST

Day of warning and following days

  • Wed 29.07. 28° 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

The likelihood is assessed as medium and the potential impact as high. Prepare with targeted measures against heat strain and keep an eye on vulnerable people around you.

What to do now

Drink enough fluids, avoid midday heat and physical exertion outdoors, keep living spaces cool by ventilating during cooler hours and shading during the day, and observe current outdoor fire bans.

Risk matrix

Event location

Coordinates · WGS84
46.3342° N, 7.5023° E
46°20′03.1″ N   7°30′08.2″ E