---
title: "Major volcano eruption (VEI ≥6) in 2026?"
canonical_url: https://betcrypto.now/events/major-volcano-eruption-vei-6-in-2026
status: live
kickoff_at: 2026-12-31T00:00:00+00:00
trading_closes_at: 2027-06-29T15:00:00+00:00
total_volume_usd: 167521.09
venues: ["Kalshi", "Polymarket"]
categories: ["Tech & Science"]
prices_as_of: 2026-10-09T15:24:02+00:00
publisher: BetCrypto
data_api: https://betcrypto.now/api/v1/events/major-volcano-eruption-vei-6-in-2026
---

# Major volcano eruption (VEI ≥6) in 2026?

Live · kickoff 2026-12-31 00:00 UTC · $167,521 traded · listed on Kalshi, Polymarket

## About

This event tracks whether 2026 will see a rare, high-magnitude volcanic eruption, with two prediction markets framing the question at different thresholds. Polymarket asks specifically whether a natural eruption reaching a Volcanic Explosivity Index of 6 or higher will occur before year-end, resolving via the Smithsonian Institution's Global Volcanism Program. Kalshi lists a related but lower-bar market keyed to VEI-4 eruptions counted by the same source, with tiered outcomes covering at least one, two, or three qualifying events.

On Polymarket, "No" for a VEI ≥6 eruption is the overwhelming favourite at 94.7%, with "Yes" priced at just 5.3%, consistent with how infrequently such large eruptions occur. Kalshi's VEI-4 ladder is far more competitive: "At least 1" sits at 54.0%, "At least 2" at 37.0%, and "At least 3" drops to 10.0%, reflecting a steep decline in implied likelihood as the required count rises.

Because Polymarket and Kalshi are resolving different questions (VEI ≥6 versus VEI-4 counts), there is no direct cross-platform spread on any shared outcome. The takeaway: markets treat a VEI ≥6 event as highly unlikely in 2026, while a single VEI-4 eruption is close to a coin flip on Kalshi.

_AI-written summary written 2026-07-11; its figures date from then — the table below is live._

## Main market

| Outcome | Probability | Cheapest | Kalshi | Polymarket |
|---|---|---|---|---|
| No | 94% | 94¢ on Polymarket | — | 94¢ |
| At least 1 | 33% | 44¢ on Kalshi | 44¢ | — |
| At least 2 | 17% | 23¢ on Kalshi | 23¢ | — |
| Yes | 7% | 7¢ on Polymarket | — | 7¢ |
| At least 3 | 2% | 3¢ on Kalshi | 3¢ | — |

## Open on a venue

- [Kalshi](https://betcrypto.now/go/e/1140?via=md)
- [Polymarket](https://betcrypto.now/go/e/5513?via=md)

---

Probability is the cross-venue consensus (book midpoints, 0–100%). Venue columns are what buying costs there (the ask). Prices move constantly; re-check at the canonical URL or https://betcrypto.now/api/v1/events/major-volcano-eruption-vei-6-in-2026.

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