2026 be the second-hottest year on record falls 8 points to 20% on Polymarket

The Polymarket contract on whether 2026 will rank as the second-hottest year on record dropped 8 percentage points to 20%, placing it among the day’s notable declines. The market had $470K traded and was due to close in about 136 days.

A lower price for a specific climate outcome

According to predictionbubbles.net, the climate question appeared among the largest downward movers on its prediction-market tracker. Its latest supplied snapshot drew venue prices on 16 Oct 2026, 22:13 UTC; the accompanying story update was published Oct 16, 2026 · 6:24 PM ET.

The decline concerns a precise annual ranking: whether 2026 finishes second-hottest. It does not, by itself, indicate which other ranking traders now consider more likely. The supplied material identifies no climate data release or other specific catalyst for the move.

How the move is measured

PredictionBubbles compares prices over 24 hours and updates its tracker every 15 minutes, according to predictionbubbles.net. It orders markets by the size of their probability-point changes rather than their relative percentage changes, so the reported decline is 8 points—not 8%.

The supplied ranking covered 2,014 markets with lifespans longer than 14 days across Polymarket and Kalshi. Trading volume provides context but does not determine placement, and markets without a valid 24-hour price comparison are excluded. The $470K traded figure therefore should not be treated as evidence of order-book depth or an explanation for the repricing.

What it means for prediction markets

• The outcome is narrowly defined. A 20% price reflects the market’s assessment of a second-hottest finish, not a general judgment about warming.
• The catalyst remains unclear. The supplied reporting documents a price change but does not establish why traders revised their expectations.
• Timing and liquidity still matter. With about 136 days until closing, the contract remains open to further repricing; reported turnover alone does not show how easily large orders could move its price.