The market assigns near-certainty to a 26°C high on August 4, 2026, reflecting confirmed observational data from primary meteorological stations in Mexico City. This aligns with typical early-August conditions at the city's high elevation, where daytime maxima commonly reach the mid-20s Celsius amid the rainy season's cloud cover and convective activity that limits extreme heating. Official networks such as those operated by Mexico's Servicio Meteorológico Nacional provide the resolution benchmark, with model consensus and station reports converging on this value rather than higher or lower thresholds. A late-day measurement revision, use of an alternate reference station, or uncharacteristic clear-sky intensification could theoretically alter the final figure, though such shifts are uncommon once preliminary data are validated.