This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section. This market will resolve to the temperature range that contains the highest temperature recorded at the Benito Juárez International Airport Station in degrees Celsius on 19 Aug '26. The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Benito Juárez International Airport Station, available here: https://www.wunderground.com/history/daily/mx/mexico-city/MMMX. To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C. This market can not resolve until the first data point for the following date has been published on the resolution source. The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market. Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Recent official forecasts and real-time observations for Mexico City on August 19 point to a daily high of 25°C as the most probable outcome, consistent with the market's overwhelming consensus. The city's subtropical highland climate at roughly 2,240 meters elevation, combined with peak rainy-season cloud cover, scattered showers, and limited solar insolation, typically caps daytime heating near historical August averages of 24–26°C. Model consensus from agencies like the National Meteorological Service reinforces this range, with minimal deviation expected absent rapid clearing or atypical convection. Scenarios that could realistically shift the high include stronger afternoon sunshine or suppressed precipitation, though such changes remain low-probability based on current atmospheric conditions.