Persistent heatwave conditions under the North Pacific high, reinforced by light winds and high humidity, are keeping overnight lows elevated across the Seoul-Incheon region, driving market-implied odds toward 27–28°C as the most likely minimum for August 6. Korea Meteorological Administration guidance and aligned global models show minimal radiative cooling overnight, with temperatures stabilizing near 27°C amid ongoing heatwave warnings and no significant frontal passages or typhoon influences expected in the next 24 hours. Typical August baselines feature lows of 22–24°C, but current subsidence and moisture retention are elevating thresholds by several degrees. Fresh model runs and official morning observations on August 6 will refine exact resolution, with any unexpected cloud cover or wind shift potentially tipping the outcome between the tightly matched leading bins.