**Forecast models and observational data from sources like the China Meteorological Administration and global ensembles (GFS/ECMWF) show a stable high-pressure regime over Chongqing with light easterly to northeasterly winds and partly cloudy skies on October 8, supporting a daytime maximum near 27–28°C.** Light winds limit mixing and advection while partial cloud cover moderates solar heating, preventing stronger warming. Chongqing’s urban heat island and basin topography can add 1–2°C locally during peak afternoon hours, creating the narrow spread between 27°C and 28°C outcomes. Low precipitation probability and dew points around 16–18°C further stabilize the thermal profile. Ensemble spread remains modest this close to the event, with traders weighting recent model runs that cluster in this range; any late shift in cloud timing or wind could tip the exact peak by 1°C.