Burning matches, flying embers from a barbecue and lightning strikes are very likely to start a fire, said the federal environment office.
Keystone-SDA
On Thursday, the Federal Office for the Environment raised the forest fire risk in parts of the canton of Valais to warning level 4 out of 5. There is also a high risk of forest fires in the cantons of Aargau, Zurich, Lucerne, Uri, Glarus and St Gallen.
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July 2, 2026 - 15:42











