Official observations from São Paulo-Guarulhos International Airport (SBGR), the market's designated weather station, confirm the highest temperature reached exactly 26°C on May 14, 2026, amid dry, stable atmospheric conditions with light winds and partial cloud cover that aligned closely with pre-event ensemble forecasts from ECMWF, GFS, and Brazil's INMET/CPTEC models projecting highs near 26°C. This verified measurement from calibrated automated sensors—reporting hourly via METAR—has solidified trader consensus at 100% implied probability, reflecting the wisdom of crowds in aggregating real-time data. While revisions are exceedingly rare, a scenario challenging this could involve INMET quality control detecting a sensor anomaly and substituting data from a secondary station like Mirante de Santana showing a divergent peak. Final daily summaries from INMET are pending but expected to affirm the reading.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Sao Paulo on May 14?
26°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$48,949 Vol.
$48,949 Vol.
21°C or below
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
Yes
27°C
No
28°C
No
29°C
No
30°C
No
31°C or higher
No
26°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$48,949 Vol.
$48,949 Vol.
21°C or below
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
Yes
27°C
No
28°C
No
29°C
No
30°C
No
31°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 Sao Paulo-Guarulhos International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/br/guarulhos/SBGR.
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 12, 2026, 12:08 AM ET
Resolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
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 Sao Paulo-Guarulhos International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/br/guarulhos/SBGR.
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/br/guarulhos/SBGRResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official observations from São Paulo-Guarulhos International Airport (SBGR), the market's designated weather station, confirm the highest temperature reached exactly 26°C on May 14, 2026, amid dry, stable atmospheric conditions with light winds and partial cloud cover that aligned closely with pre-event ensemble forecasts from ECMWF, GFS, and Brazil's INMET/CPTEC models projecting highs near 26°C. This verified measurement from calibrated automated sensors—reporting hourly via METAR—has solidified trader consensus at 100% implied probability, reflecting the wisdom of crowds in aggregating real-time data. While revisions are exceedingly rare, a scenario challenging this could involve INMET quality control detecting a sensor anomaly and substituting data from a secondary station like Mirante de Santana showing a divergent peak. Final daily summaries from INMET are pending but expected to affirm the reading.
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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