Recent short-range forecasts from the China Meteorological Administration and global models indicate Beijing's August 21 high will most likely reach 30–33°C under typical late-summer conditions of moderate humidity, light southerly flow, and variable cloud cover with possible scattered thunderstorms. Ensemble guidance shows tight clustering around these values, consistent with historical late-August averages near 31°C and a gradual seasonal decline. Minor model disagreements on exact timing of afternoon convection or cloud thickness represent the main sources of uncertainty, though major deviations remain unlikely absent unexpected shifts in regional steering patterns or moisture influx. Updated model runs and official briefings over the next 48 hours will provide the clearest signals ahead of market resolution based on verified daily maximum observations.