The overwhelming market consensus at 33°C reflects confirmed observational data from the Hong Kong Observatory, which records daily maximum temperatures at official stations using standardized instruments. Recent atmospheric conditions, including clear skies and southerly flow typical for late September, have supported this peak reading without significant diurnal variation or cooling influences from rain or stronger winds. Historical September averages hover near 29–31°C, making today's elevated value consistent with seasonal patterns but firmly above nearby thresholds. Minor uncertainty remains only if post-analysis quality control revises the final figure due to sensor calibration or station-specific anomalies, though such adjustments are rare once preliminary values stabilize.