**Recent forecasts for Chongqing on August 26 converge on a daily maximum of 36–38 °C, with model outputs and agency guidance clustered in that narrow band.** This produces the tightest market pricing around 37 °C (26.5 %) and 38 °C (30.5 %), followed by 39 °C (21 %), while lower (36 °C, 12 %) and higher (40 °C+, <7 % combined) outcomes receive less weight. Chongqing’s Sichuan Basin location favors strong daytime heating under mostly clear or partly cloudy skies: weak pressure gradients produce light easterly or variable winds, limiting mixing, while high solar insolation in late August drives rapid temperature rise after sunrise. Dew points near 24–26 °C add humidity but do not directly alter the dry-bulb maximum that the market resolves on. Minor differences among leading outcomes stem from small variations in forecast cloud cover, timing of any scattered afternoon showers, and resolution of the precise peak hour—factors that numerical models still disagree on by 1–2 °C this far out. Official guidance issued 23 August projected 39 °C with limited cooling from isolated storms; subsequent runs from global and regional models have trended 1–2 °C lower, shifting implied probability toward the 37–38 °C cluster. Final adjustments are likely when the China Meteorological Administration issues its updated 48-hour and 24-hour forecasts on 25 August. Traders are therefore pricing the genuine remaining uncertainty in the narrow range between those thresholds rather than any single deterministic value.