Worldwide Volcanic Activity Report: August 23, 2026 — Fuego, Klyuchevskoy, Krakatau, Semeru, Ibu, Dukono Among Active Volcanoes

A global volcanic activity summary listed Fuego, Klyuchevskoy, Krakatau, Semeru, Ibu and Dukono among volcanoes active on August 23, 2026, continuing days of elevated activity.

Original report
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Industry impact

Sustained volcanic activity across Indonesia, Guatemala, Russia and Italy raises the recurring risk of ash-related airspace restrictions affecting business aviation routing near these regions.

Multiple volcanoes worldwide showed activity on August 23, 2026, with Fuego in Guatemala, Klyuchevskoy in Russia, and Krakatau, Semeru, Ibu and Dukono in Indonesia among those reported active. This followed similar activity on August 22 at Fuego, Krakatau, Semeru, Ibu, Dukono and Reventador, and on August 21 at Santiaguito, Fuego, Klyuchevskoy, Krakatau and Semeru, with Indonesian volcanoes prominent in recent reports and multiple eruptions noted at Alert Level 3.

Etna in Italy was also active during the preceding week; a volcanic ash advisory issued on August 17 reported an ash plume reaching 16,000 feet (4,900 meters) as of 15:00 UTC that day.