Official observations from Benito Juárez International Airport (MMMX)—the market's resolution source via Wunderground and Servicio Meteorológico Nacional (SMN) data—confirm a maximum temperature of 25°C on May 12, 2026, driving near-unanimous trader consensus at 100% implied probability. This positioning stems from Frente Frío No. 50's arrival, ushering cooler mid-level air, extensive cloud cover, and scattered thunderstorms that limited daytime solar heating after an early peak, despite Mexico City's climatological May average highs near 26°C. METAR reports captured temperatures topping at 25°C midday before convective activity intensified. Realistic challenges include final quality-controlled SMN revisions uncovering a sensor anomaly pushing to 26°C+, though such discrepancies are rare post-preliminary validation; traders await the daily climate bulletin for closure.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Mexico City on May 12?
25°C 100.0%
16°C or below <1%
17°C <1%
18°C <1%
$78,614 Vol.
$78,614 Vol.
16°C or below
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
Yes
26°C or higher
No
25°C 100.0%
16°C or below <1%
17°C <1%
18°C <1%
$78,614 Vol.
$78,614 Vol.
16°C or below
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
Yes
26°C or higher
No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Benito Juárez International Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: May 10, 2026, 12:09 AM ET
Resolution Source
https://www.wunderground.com/history/daily/mx/mexico-city/MMMXResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Benito Juárez International Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Resolution Source
https://www.wunderground.com/history/daily/mx/mexico-city/MMMXResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official observations from Benito Juárez International Airport (MMMX)—the market's resolution source via Wunderground and Servicio Meteorológico Nacional (SMN) data—confirm a maximum temperature of 25°C on May 12, 2026, driving near-unanimous trader consensus at 100% implied probability. This positioning stems from Frente Frío No. 50's arrival, ushering cooler mid-level air, extensive cloud cover, and scattered thunderstorms that limited daytime solar heating after an early peak, despite Mexico City's climatological May average highs near 26°C. METAR reports captured temperatures topping at 25°C midday before convective activity intensified. Realistic challenges include final quality-controlled SMN revisions uncovering a sensor anomaly pushing to 26°C+, though such discrepancies are rare post-preliminary validation; traders await the daily climate bulletin for closure.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

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