Recent short-range forecasts from the Korea Meteorological Administration and global models indicate typical late-summer conditions for Busan on August 21, with daytime highs near 29–31°C amid increasing cloud cover, high humidity, and a 30–60% chance of afternoon showers or isolated thunderstorms that could limit peak heating. Persistent subtropical moisture and weak steering patterns following early-August heatwaves support these outlooks, though slight model differences in timing of any frontal passage introduce modest uncertainty around exact maxima. Official resolution relies on KMA station observations using standard maximum temperature criteria, with updated model runs and agency briefings expected in the next 24–48 hours to refine trader consensus.