Trader sentiment clusters around 29–31°C for Chengdu’s August 20 maximum because numerical weather prediction models show modest day-to-day variability in cloud cover and boundary-layer moisture within the Sichuan Basin. Persistent summer monsoon flow supplies high humidity that caps daytime heating through reduced insolation and evaporative cooling from scattered showers, while occasional clearer intervals allow brief radiative warming. Ensemble guidance from global and regional models indicates a narrow range of outcomes centered near the long-term August climatological high of roughly 30–32 °C, with limited potential for stronger subsidence or drier air to push readings above 33 °C. Resolution hinges on the precise timing of any convective activity and the strength of nocturnal radiative cooling, both of which remain sensitive to small shifts in steering flow and local orographic effects over the next 48 hours.