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A warning about the red level for heat waves was imposed in several regions of Portugal, Italy and Croatia, while a number of warnings from moderate to high level included territories in Spain, France, Austria, Belgium, Bosnia and Herzegovina, Hungary, Serbia, Slovenia and Switzerland. In the photo, children and adults cool themselves and enjoy water in the fountain in the Andre-Citrone public park, when hot waves hit South Europe, in Paris on June 29, 2025. (Julie Sebadelch/AFP)