Recent meteorological observations and forecast model consensus from agencies monitoring East Asia have aligned on a daily maximum of 22°C for Shanghai on October 3, driving the near-certain market-implied probability. Surface temperature readings, combined with stable atmospheric conditions including moderate humidity and limited solar heating under partial cloud cover, support this outcome as the high point before evening cooling. Historical October baselines for the region show typical highs near 23–25°C, making today's subdued peak consistent with current data. Minor model divergences or late-day measurement adjustments at official stations remain the primary scenarios that could shift resolution, though such revisions appear unlikely given converging reports.