Korea Meteorological Administration observations confirm Seoul's temperature reached 19.5°C by 10:00 KST on April 26 under clear skies, with hourly forecasts projecting a peak of 24°C near 15:00 amid a high-pressure ridge and light westerly winds fostering strong daytime heating. This aligns with recent warm anomalies—prior days hit 26°C highs—exceeding late-April climatological norms of 18–19°C, driving unanimous trader consensus (100% implied probability) for 20°C or higher based on official station data from Seoul or Incheon International Airport. Realistic challenges would require an unforeseen marine layer, sudden cloud cover, or cold front intrusion before afternoon peak, though model ensembles show high stability and no such signals. KMA updates expected hourly through evening resolution.