Trader consensus on Polymarket overwhelmingly backs a 27°C high temperature in Chongqing on April 30, 2026, reflecting official observational data from the China Meteorological Administration's monitoring stations at Chongqing Jiangbei International Airport, where midday peaks stalled around 24°C under persistent overcast skies before reaching exactly 27°C amid limited solar insolation and high humidity suppressing further diurnal heating. This aligns with numerical weather prediction model consensus from CMA, GFS, and ECMWF, which projected daytime maxima of 26-28°C given multi-layered cloud cover and weak southerly flow, matching the climatological average of 26.8°C for this date. With sunset past and no significant clearing observed, probabilities exceed 99% for 27°C; a realistic challenge would require a late data revision uncovering a higher station reading, though such discrepancies are rare in official records. Final resolution awaits end-of-day verification from authoritative sources.