Global temperature records are maintained by major meteorological organizations including NASA, NOAA, and the UK Met Office. Recent years have consistently ranked among the warmest on record, with 2024 and several preceding years breaking previous historical records. The question asks whether 2026 will rank as the fifth-hottest year since comprehensive temperature record-keeping began in the 1880s. Currently, the prediction market is pricing this outcome at 0% probability, suggesting strong trader confidence that 2026 will not enter the top five hottest years. This reflects expectations that either global temperatures will cool slightly from recent peaks, or that other recent years will still rank hotter than 2026 when final data is compiled. Temperature rankings are determined by comparing 2026's annual global mean temperature against the complete historical dataset from organizations like NASA and NOAA, with results typically finalized in early 2027. The market's 0% odds indicate traders believe the probability of achieving a top-five ranking is extremely remote, though the final outcome depends entirely on actual 2026 climate measurements and official ranking calculations. The outcome will be resolved once meteorological organizations publish their annual temperature rankings, comparing 2026 against all years since records began.