Official meteorological observations from the Korea Meteorological Administration and Incheon International Airport on September 7, 2026, show afternoon maximum temperatures stabilizing near 28–29 °C under clear skies and light northerly winds. Multiple forecast models and real-time station readings converged on this narrow range, producing near-certain market-implied odds for exactly 28 °C as the daily high. Historical September climatology for the region supports typical highs around 25–28 °C, consistent with current conditions. Only a significant late-day shift—such as unexpected marine-layer intrusion or rapid wind increase—could realistically push the recorded maximum below or above this threshold before resolution.