Trader sentiment for Chongqing's October 17 high clusters around 25–27°C because short-range ensemble models show a typical mid-autumn transition pattern, with daytime maxima modulated by weakening monsoon flow and possible northerly advection. Current guidance from global and regional models indicates modest variability tied to the exact strength and timing of high-pressure ridging versus any approaching frontal boundary, producing the tight spread among leading outcomes. Historical October averages near 22–24°C provide context, while Chongqing’s basin topography and urban heat island can add 1–3°C locally. New model runs and observational updates over the next 48 hours will likely refine the precise peak before resolution.