Recent forecast model runs from agencies like the China Meteorological Administration show high uncertainty for Chongqing's peak temperature on July 21, with ensemble outputs clustering between 37–40°C amid shifting subtropical high pressure and variable moisture inflow from the monsoon. This drives the tight market spread, as traders weigh typical July heat in the Sichuan Basin—where urban heat island effects and topography often push extremes above 38°C—against potential cooling from increased cloud cover or precipitation. Upcoming model updates and observational data over the next 48 hours will likely refine probabilities around these thresholds.