Trader consensus on Polymarket reflects a 91.5% implied probability for no major volcanic eruption reaching Volcanic Explosivity Index (VEI) ≥6 in 2026, driven by the historical rarity of such events—occurring roughly several times per century, with the last confirmed VEI 6 at Mount Pinatubo in 1991—and the absence of precursors at capable volcanoes. U.S. Geological Survey (USGS) monitoring shows no significant seismic swarms, ground deformation, or elevated gas emissions signaling buildup at high-risk sites like Yellowstone, Campi Flegrei, or Toba caldera; current global activity, including Kīlauea's ongoing effusive episodes since late 2024, remains at low VEI levels (0–2). With half of 2026 elapsed uneventfully, weekly Smithsonian/USGS reports reinforce this calm. Realistic challenges include sudden unrest at under-monitored stratovolcanoes or rapid caldera inflation, though models indicate low likelihood absent early warnings.