Traders have converged on a 28°C high for Busan on October 11 due to official observational data and model consensus showing peak temperatures reaching that threshold amid mild autumn conditions, with daytime maxima supported by southerly flow and limited cloud cover. Recent forecasts from agencies tracking the region align closely with this outcome, consistent with typical early-October patterns where highs often stabilize near or slightly above seasonal averages without significant frontal passages. Market-implied odds reflect high confidence in the final recorded maximum, though minor revisions in official station data or localized variations could still shift the exact reading within narrow bounds before resolution.