The eruption of Anak Krakatau has forced the closure of several major airports across Indonesia, while a number of other volcanoes around the country continue to show heightened activity.
Siti Sumilah Rita Susilawati, Head of Indonesia's Centre for Volcanology and Geological Hazard Mitigation (PVMBG), says volcanic activity is a natural part of life in Indonesia, which sits on the Pacific Ring of Fire and is home to 127 active volcanoes. Throughout 2026, PVMBG has recorded eruptions at at least eight volcanoes, including Anak Krakatau, Semeru, Merapi, Mount Ibu, Dukono, Lewotobi and Lewotolok.
As of Monday morning, 7 September, PVMBG had recorded eruptions at Mount Ibu, Mount Semeru and Mount Ili Lewotolok. Anak Krakatau, meanwhile, had not shown any eruption activity since midnight, with its most recent eruption recorded at around 10pm the previous evening.
At present, Anak Krakatau remains the main focus of attention. The volcano's eruption, which began on 4 September, was considered unusual because it continued for around 25 hours without interruption. Unlike its more typical intermittent eruptions, this event produced a continuous flow of lava and volcanic ash, resulting in broader impacts on air quality and aviation.
PVMBG is working closely with Indonesia's Meteorology, Climatology and Geophysics Agency (BMKG) to monitor volcanic ash movements and provide information to aviation authorities. Current data shows ash from Anak Krakatau continues to move west and south-west. Updates on ash dispersion and volcano alert levels are available through the Magma Indonesia app, the Geological Agency website and PVMBG's official social media channels.
Despite heightened volcanic activity in recent days, PVMBG says no fatalities have been reported. Authorities are urging the public, particularly hikers and tourists, to follow official exclusion zone advice and safety recommendations when visiting areas near active volcanoes.
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