Mayon Volcano

Mayon Volcano Right Now: Level 2, Not Level 3

As of October 2026, Mayon is at Alert Level 2— low-level unrest, not a hazardous eruption. PHIVOLCS lowered the alert from Level 3 to Level 2 on August 5, 2026 as the year's long eruptive episode wound down, and it has held there ever since. The volcano is still degassing and occasionally emitting ash — a Darwin VAAC advisory on September 18 and a grey plume 200 m above the crater at 8:04 a.m. on October 3 — but those are normal for a restless Level 2 volcano, not evidence of a fresh escalation.Sources: PHIVOLCS bulletins (Manila Bulletin / Philippine Star / Inquirer, Aug 5–7, 2026, on the Level 2 downgrade); Darwin VAAC ash advisory (Sept 18, 2026); GMA News / PHIVOLCS report on the Oct 3 ash emission; Smithsonian GVP Weekly Volcanic Activity Report (Sept 24–30, 2026). All checked October 2026.

This matters because some September coverage described Mayon as back at "Level 3." It wasn't. The confusion comes from the September 18 ash advisory — an aviation ash notice from the Darwin VAAC, which flags ash in the air, not a change in PHIVOLCS's ground-alert level. Throughout late September and into October, PHIVOLCS's own bulletins kept Mayon at Alert Level 2. During September 23–29 the seismic network logged 8–22 volcanic earthquakes a day, sulfur dioxide output of 692–1,249 tonnes per day, and plumes rising 500–900 m, with one short ash emission and minor Strombolian activity on September 26. On October 6, PHIVOLCS recorded 16 volcanic earthquakes and ~500 m of white steam, with the edifice swelling then briefly deflating.

None of that erases how dangerous the first half of 2026 was. PHIVOLCS raised Mayon to Level 3 on January 6, when a growing summit lava dome began collapsing and shedding pyroclastic density currents down the Bonga Gully — 56 discrete PDCs on the night of January 8–9 alone. On May 2 a larger event pushed lava 3.8 km down the Basud Gully and sent PDCs down Mi-isi, with PHIVOLCS reporting more than 199,000 people — roughly 52,000 families — affected across the Bicol region. That is the through-line at Mayon: when the summit dome grows faster than it can stay stable, chunks break off as PDCs. It is why PHIVOLCS keeps the 6 km danger zone permanent — enforced even now, at Level 2.

The 2026 activity follows a pattern our database makes obvious: Mayon's recent eruptions cluster tightly. The 2023-24 eruption ended in February 2024, and the Level 3 phase that opened 2026 began less than a year later. It erupts roughly every 6 years on average, but the gaps have been shrinking since 2018 — which is why even a Level 2 "quiet" spell like the current one is worth watching rather than dismissing.

The real concern is how fast Mayon can climb once the summit dome destabilizes again. During the 2018 eruption it jumped to Level 4 — hazardous eruption imminent — within days, with lava fountains reaching 500-700 meters. For now PHIVOLCS holds the alert at Level 2 and flags only low-level unrest, but it keeps the 6 km zone closed precisely because that climb can be quick. This same restless backdrop has been playing out region-wide; see our explainer on why so many volcanoes were erupting at once in September 2026.

By VolcanoDB Research Team. Data: PHIVOLCS bulletins, Smithsonian Global Volcanism Program (GVP #273030, Weekly Report Sept 24–30, 2026), Darwin VAAC. Current alert level verified October 2026.

The World's Most Perfect Cone — Why Mayon Looks Like That

Mayon is arguably the most symmetrical stratovolcano on Earth. Its near-perfect cone rises 2,462 meters from a base that's almost perfectly circular, with slopes averaging 35-40 degrees — steep enough to look dramatic, gentle enough to maintain symmetry.

The perfection comes from frequency. With 69 recorded eruptions, Mayon deposits new layers of lava and pyroclastic material so often that erosion never has time to significantly alter the shape. Compare this to Mount St. Helens, which went 123 years between major eruptions and had its cone catastrophically reshaped in 1980. Mayon's cone self-repairs every few years.

The rock composition matters too. Mayon produces andesite and basaltic andesite — moderately viscous lavas that flow far enough to maintain gentle slopes but are sticky enough to build height. It's the Goldilocks zone for cone-building.

69 Eruptions Since 1616: Mayon's Complete Eruption History

Our database tracks 69 eruptions for Mayon, sourced from the Smithsonian GVP. That's an eruption every 5.9 years on average — one of the highest frequencies of any volcano in our 1,740-volcano database. Here are the eruptions that shaped Mayon's history and the science of Philippine volcanology.

The VEI distribution tells the story: 26 eruptions at VEI 2 (moderate), 15 at VEI 3 (large), and 2 at VEI 4 (very large). Mayon rarely goes quiet for long, and it rarely goes catastrophically explosive either. It's a reliable, persistent producer of moderate eruptions — which is exactly why it maintains that perfect cone.

View Mayon's complete database entry for the full eruption record, including VEI values, eruption areas, and evidence categories for each event.

The 1814 Eruption: Mayon's Deadliest Day

On February 1, 1814, Mayon produced its most devastating eruption — a VEI 4 event that killed over 1,200 people. The eruption sent pyroclastic flows racing down all flanks of the volcano, incinerating everything within several kilometers.

The Cagsawa church, built by Franciscan missionaries in 1587, became a death trap. Hundreds of villagers had gathered inside, believing the stone structure would protect them. It didn't. The pyroclastic flows buried the entire town under millions of cubic meters of tephra and volcanic debris. Today, only the church's bell tower protrudes above the deposits — a haunting monument that's become Albay province's most photographed landmark.

Lahars triggered by the eruption traveled 15+ km from the summit, following river channels to the coast. The eruption ejected an estimated 50-60 million cubic meters of tephra — roughly 20 Olympic swimming pools' worth of volcanic material.

Why Mayon's Pyroclastic Flows Are So Dangerous

Mayon's steep slopes — 35-40 degrees on average — are a pyroclastic flow accelerator. When a pyroclastic density current forms at Mayon's summit (either from column collapse or lava dome collapse), it hits steep terrain immediately and accelerates downhill. The gullies carved by previous eruptions act as channels, funneling the flows toward populated areas.

The May 2, 2026 pyroclastic flow followed the Mi-isi gully on the southwestern flank — one of the most active drainage channels. The 1993 eruption killed 77 people when pyroclastic flows came down these same gullies and caught farmers who had returned to their fields inside the danger zone.

That's why PHIVOLCS maintains a permanent 6 km danger zone around Mayon — unlike many other volcanoes where exclusion zones are only established during active unrest. With Mayon, the threat is essentially permanent.

Visiting Mayon: Cagsawa Ruins, ATV Tours & When It's Safe

Outside of active eruption phases, Mayon is one of the most visually stunning volcanoes you can get close to. The region around Legazpi City (13 km from the summit) has built a tourism economy around the volcano, and the infrastructure is solid.

For more volcano tourism ideas, check our volcano hiking safety guide and the Mount Etna hiking guide — another active stratovolcano you can actually climb during non-eruptive periods.

Mayon in Context: How It Compares

Mayon sits on the Eastern Philippine Volcanic Arc, part of the broader Pacific Ring of Fire. The Philippines has 24 active volcanoes— including Kanlaon Volcano on Negros Island, which has been the country's most active in 2026 — and Mayon ranks among our most dangerous volcanoes due to the 3 million people in Albay province. Here's how it stacks up against other frequently active volcanoes:

What makes Mayon distinctive isn't just the eruption count — it's the combination of high frequency, explosive potential (VEI 3-4), and dense surrounding population. Over 100,000 people live within the permanent danger zone. Unlike Kilauea, which produces relatively gentle shield volcano eruptions, Mayon's stratovolcanic eruptions regularly produce pyroclastic flows — the deadliest volcanic hazard.

How PHIVOLCS Monitors Mayon

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) operates a dense monitoring network around Mayon. This includes seismometers that detect the volcanic earthquakes and rockfall events reported daily, tiltmeters that measure ground deformation as magma rises, and gas spectrometers that track SO2 emissions. It is this network that flags dome-collapse pyroclastic density currents in near real time — the trigger behind the January 2026 Alert Level 3 declaration — and that same network is what keeps Mayon correctly logged at Level 2 today, even while ash advisories come and go.

The alert system runs from Level 0 (quiet) to Level 5 (hazardous eruption in progress). Level 2, where Mayon sits now, signals low-level unrest — a moderate step, with sudden steam or ash explosions possible but no imminent hazardous eruption. The jump between levels can happen fast, though: during the 2018 eruption Mayon climbed from Level 2 to Level 4 within days.

Frequently Asked Questions