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Heat 4/5 high METEOALARM

Heat warning Basel: level 4, high health risk

Unchanged since the first report last verified 17:28 CEST

Summary

A level 4 of 5 heat warning is in effect for Basel. Persistently high temperatures are straining health and circulation.

What hazard threatens

High temperatures strain the circulation and health, especially of the elderly, infants and the sick; the risk of forest and wildfires rises.

Local weather conditions

Measuring station Basel / Binningen, 316 m a.s.l., 4 km from the event

Temperature

33.9 °C

When the warning was issued · 29.07.2026 12:00 CEST

Daily maximum

37.4 °C

on the day of the warning

Humidity

29 %

When the warning was issued · 29.07.2026 12:00 CEST

Day of warning and following days

  • Wed 29.07. 37° 18° 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. 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.

What to do now

Hydrate now, cool down your living spaces, and check whether neighbours or relatives need help coping with the heat.

Risk matrix

Event location

Coordinates · WGS84
47.5081° N, 7.5967° E
47°30′29.1″ N   7°35′47.9″ E