Market Overview

The market for 2026 ranking as the fifth-hottest year in the Global Land-Ocean Temperature Index has stabilized at 0.5% probability, with $714,085 in volume. This exceptionally low odds reflects a consensus view that the scenario is unlikely. The market uses NASA's official temperature rankings, which date back to 1880, making the fifth-hottest position a threshold that would require 2026 to be warmer than all but four years in recorded history.

Why It Matters

This market serves as a barometer for expectations around global temperature trends over the coming year. Given that the past decade has witnessed an unprecedented clustering of record or near-record warm years, the market probability reveals bettors' assessments of whether warming will accelerate, stabilize, or moderate in 2026. The extremely low odds suggest widespread expectation that 2026 will either rank higher (hotter) than fifth place or substantially lower, with little confidence in this specific middle-ground outcome.

Key Factors

Several factors drive the market's current assessment. Recent years have established a pattern of exceptional warmth: 2023 set a new record, 2024 is tracking as potentially the warmest or second-warmest year, and El Niño conditions—which typically elevate global temperatures—characterized much of 2023-2024. The extremely low 0.5% probability suggests the market anticipates 2026 will either continue this trend toward hotter-than-fifth-place rankings or experience a reversal significant enough to fall well below fifth. The transition to cooler La Niña conditions, which typically moderate temperatures, could push 2026 lower in the rankings, making fifth place an unlikely target in either direction.

Outlook

The stability of this probability at 0.5% over the past 24 hours indicates the market has equilibrated around this assessment. The outcome depends primarily on El Niño/La Niña conditions, solar forcing, and underlying warming trends. For 2026 to rank exactly fifth would require a narrow band of outcomes—warm enough to beat years outside the top five, but cool enough to stay below the four hottest years. As data accumulates through 2026 and into early 2027, when NASA releases final temperature figures, market participants will update expectations. The resolution will occur immediately upon data availability, likely in early 2027.