Official observations from the São Paulo-Guarulhos International Airport (GRU) weather station, the authoritative source for this market, recorded a maximum temperature of 29°C on April 2, 2026, under clear skies and low humidity around 55%, with no precipitation—driving trader consensus to 100% implied probability for that outcome. This aligns with Instituto Nacional de Meteorologia (INMET) data showing 28.4°C by 3 p.m. local time, followed by a late-afternoon peak typical in subtropical autumn conditions when solar heating dominates without cloud interference. April highs in São Paulo average 25°C, but dry high-pressure systems enable such outliers. Revisions are rare, requiring proven sensor errors or data discrepancies from cross-verified instruments.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Sao Paulo on April 2?
Highest temperature in Sao Paulo on April 2?
29°C 100.0%
30°C <1%
31°C <1%
32°C <1%
$89,545 Vol.
$89,545 Vol.
29°C
100%
30°C
<1%
31°C
<1%
32°C
<1%
33°C or higher
<1%
29°C 100.0%
30°C <1%
31°C <1%
32°C <1%
$89,545 Vol.
$89,545 Vol.
29°C
100%
30°C
<1%
31°C
<1%
32°C
<1%
33°C or higher
<1%
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: Mar 29, 2026, 1:53 PM ET
Resolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...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...Official observations from the São Paulo-Guarulhos International Airport (GRU) weather station, the authoritative source for this market, recorded a maximum temperature of 29°C on April 2, 2026, under clear skies and low humidity around 55%, with no precipitation—driving trader consensus to 100% implied probability for that outcome. This aligns with Instituto Nacional de Meteorologia (INMET) data showing 28.4°C by 3 p.m. local time, followed by a late-afternoon peak typical in subtropical autumn conditions when solar heating dominates without cloud interference. April highs in São Paulo average 25°C, but dry high-pressure systems enable such outliers. Revisions are rare, requiring proven sensor errors or data discrepancies from cross-verified instruments.
Experimental AI-generated summary referencing Polymarket data · Updated
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