Official observations from São Paulo-Guarulhos International Airport, the market's designated resolution source via Wunderground, recorded a maximum temperature of 25°C on April 11, driving trader consensus to a near-certain 100% implied probability for that outcome. This peak occurred mid-afternoon under partly cloudy skies with light southerly winds, aligning precisely with Instituto Nacional de Meteorologia (INMET) forecasts of 24–26°C amid a stable autumn high-pressure ridge suppressing convective activity. Historical April climatology for the region averages 25–26°C maxima, reinforcing the positioning. Realistic challenges would require data revisions from preliminary METAR reports or rare station discrepancies, but final validated readings typically preclude shifts post-release.
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 April 11?
Highest temperature in Sao Paulo on April 11?
25°C 100.0%
19°C or below <1%
20°C <1%
21°C <1%
$74,036 Vol.
$74,036 Vol.
19°C or below
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
Yes
26°C
No
27°C
No
28°C
No
29°C or higher
No
25°C 100.0%
19°C or below <1%
20°C <1%
21°C <1%
$74,036 Vol.
$74,036 Vol.
19°C or below
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
Yes
26°C
No
27°C
No
28°C
No
29°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: Apr 7, 2026, 12:29 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, the market's designated resolution source via Wunderground, recorded a maximum temperature of 25°C on April 11, driving trader consensus to a near-certain 100% implied probability for that outcome. This peak occurred mid-afternoon under partly cloudy skies with light southerly winds, aligning precisely with Instituto Nacional de Meteorologia (INMET) forecasts of 24–26°C amid a stable autumn high-pressure ridge suppressing convective activity. Historical April climatology for the region averages 25–26°C maxima, reinforcing the positioning. Realistic challenges would require data revisions from preliminary METAR reports or rare station discrepancies, but final validated readings typically preclude shifts post-release.
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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