**Recent forecasts indicate a sharp cooldown for Chongqing on September 10 driven by an incoming weather system bringing clouds, light rain, and a shift to southwesterly flow.** Official and model guidance from sources including Chinese meteorological services and international models show daytime highs dropping from recent 35–37°C levels to the mid-20s°C range, with overnight lows likely settling between roughly 19–23°C depending on cloud cover duration, rainfall timing, and local wind patterns that influence radiative cooling. This contrasts with typical early-September climatology of lows near 21–22°C and creates tight market spreads, as modest variations in precipitation intensity or frontal timing can push the minimum across key thresholds like 19°C or 20°C. Updated model runs and official briefings in the next 12–24 hours will refine these details ahead of resolution based on standard station measurements.