Trader consensus on Polymarket overwhelmingly backs 19°C as Busan’s highest temperature on April 6, 2026, reflecting official observational data from the Korea Meteorological Administration (KMA) showing a daytime peak of 19°C at key stations amid persistent cloud cover and northerly winds. Hourly records indicate temperatures topped out in the early afternoon before dropping sharply in a cold air mass, with evening forecasts confirming no rebound above 18°C under hazy conditions and light precipitation risks. This aligns with spring climatology for Busan, where April highs average 16–18°C but vary with frontal passages. Scenarios challenging this include a rare late sunbreak boosting surface heating or post-day data revisions from peripheral stations, though KMA model consensus and historical patterns render such shifts improbable as sunset approaches.