Official observations from São Paulo–Guarulhos International Airport (SBGR), the market's resolving station under Instituto Nacional de Meteorologia (INMET) protocols, recorded a maximum temperature of 26°C on April 21, 2026, driving the 100% trader consensus on this outcome. This peak occurred amid partly cloudy conditions with light winds and high humidity, consistent with autumnal climatology in southeastern Brazil, where April highs typically range 24–27°C based on 30-year normals. Pre-event forecasts from INMET and models like GFS projected similar values around 25°C, validated by hourly METAR reports showing no exceedance. Scenarios challenging this include rare post hoc data revisions from sensor calibration issues or overlooked peak readings, though quality controls minimize such risks as final INMET bulletins finalize.
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 21?
Highest temperature in Sao Paulo on April 21?
26°C 100.0%
23°C or below <1%
24°C <1%
25°C <1%
$54,758 Vol.
$54,758 Vol.
Apr 21, 2026
23°C or below
No
24°C
No
25°C
No
26°C
Yes
27°C
No
28°C
No
29°C
No
30°C
No
31°C
No
32°C
No
33°C or higher
No
26°C 100.0%
23°C or below <1%
24°C <1%
25°C <1%
$54,758 Vol.
$54,758 Vol.
Apr 21, 2026
23°C or below
$2,063 Vol.
No
24°C
$6,443 Vol.
No
25°C
$9,514 Vol.
No
26°C
$10,369 Vol.
Yes
27°C
$8,550 Vol.
No
28°C
$6,363 Vol.
No
29°C
$2,038 Vol.
No
30°C
$2,296 Vol.
No
31°C
$1,714 Vol.
No
32°C
$2,029 Vol.
No
33°C or higher
$3,379 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 21 Apr '26.
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.Official observations from São Paulo–Guarulhos International Airport (SBGR), the market's resolving station under Instituto Nacional de Meteorologia (INMET) protocols, recorded a maximum temperature of 26°C on April 21, 2026, driving the 100% trader consensus on this outcome. This peak occurred amid partly cloudy conditions with light winds and high humidity, consistent with autumnal climatology in southeastern Brazil, where April highs typically range 24–27°C based on 30-year normals. Pre-event forecasts from INMET and models like GFS projected similar values around 25°C, validated by hourly METAR reports showing no exceedance. Scenarios challenging this include rare post hoc data revisions from sensor calibration issues or overlooked peak readings, though quality controls minimize such risks as final INMET bulletins finalize.
This market will resolve to the temperature range that contains the highest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 21 Apr '26.
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.
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 19, 2026, 12:06 AM ET
Volume
$54,758End Date
Apr 21, 2026Market Opened
Apr 19, 2026, 12:06 AM ETResolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 21 Apr '26.
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.Official observations from São Paulo–Guarulhos International Airport (SBGR), the market's resolving station under Instituto Nacional de Meteorologia (INMET) protocols, recorded a maximum temperature of 26°C on April 21, 2026, driving the 100% trader consensus on this outcome. This peak occurred amid partly cloudy conditions with light winds and high humidity, consistent with autumnal climatology in southeastern Brazil, where April highs typically range 24–27°C based on 30-year normals. Pre-event forecasts from INMET and models like GFS projected similar values around 25°C, validated by hourly METAR reports showing no exceedance. Scenarios challenging this include rare post hoc data revisions from sensor calibration issues or overlooked peak readings, though quality controls minimize such risks as final INMET bulletins finalize.
This market will resolve to the temperature range that contains the highest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 21 Apr '26.
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.
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.
Volume
$54,758End Date
Apr 21, 2026Market Opened
Apr 19, 2026, 12:06 AM ETResolution 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 resolving station under Instituto Nacional de Meteorologia (INMET) protocols, recorded a maximum temperature of 26°C on April 21, 2026, driving the 100% trader consensus on this outcome. This peak occurred amid partly cloudy conditions with light winds and high humidity, consistent with autumnal climatology in southeastern Brazil, where April highs typically range 24–27°C based on 30-year normals. Pre-event forecasts from INMET and models like GFS projected similar values around 25°C, validated by hourly METAR reports showing no exceedance. Scenarios challenging this include rare post hoc data revisions from sensor calibration issues or overlooked peak readings, though quality controls minimize such risks as final INMET bulletins finalize.
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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