Official INMET observations from São Paulo's primary meteorological stations, including the capital's automated network, recorded a maximum temperature of 27°C on April 28, 2026, driving trader consensus to near-certainty on this outcome as markets resolved. This aligns with lingering effects of a cold front that brought unstable conditions, widespread cloud cover, and isolated showers, suppressing daytime heating despite urban heat island influences at sites like Congonhas Airport. April climatology typically sees highs of 25–26°C, and model forecasts from CPTEC-INMET had anticipated subdued peaks amid high humidity (80–100%) and weak solar insolation. Challenges would require rare post hoc data revisions from sensor recalibrations or disputes over the resolving station's reading, with final INMET bulletins expected to confirm within 24–48 hours.
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 28?
Highest temperature in Sao Paulo on April 28?
27°C 100.0%
25°C or below <1%
26°C <1%
28°C <1%
$55,090 Vol.
$55,090 Vol.
Apr 28, 2026
25°C or below
No
26°C
No
27°C
Yes
28°C
No
29°C
No
30°C
No
31°C
No
32°C
No
33°C
No
34°C
No
35°C or higher
No
27°C 100.0%
25°C or below <1%
26°C <1%
28°C <1%
$55,090 Vol.
$55,090 Vol.
Apr 28, 2026
25°C or below
$7,871 Vol.
No
26°C
$5,470 Vol.
No
27°C
$8,804 Vol.
Yes
28°C
$10,201 Vol.
No
29°C
$7,396 Vol.
No
30°C
$3,616 Vol.
No
31°C
$2,500 Vol.
No
32°C
$3,123 Vol.
No
33°C
$1,804 Vol.
No
34°C
$2,262 Vol.
No
35°C or higher
$2,042 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 28 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 INMET observations from São Paulo's primary meteorological stations, including the capital's automated network, recorded a maximum temperature of 27°C on April 28, 2026, driving trader consensus to near-certainty on this outcome as markets resolved. This aligns with lingering effects of a cold front that brought unstable conditions, widespread cloud cover, and isolated showers, suppressing daytime heating despite urban heat island influences at sites like Congonhas Airport. April climatology typically sees highs of 25–26°C, and model forecasts from CPTEC-INMET had anticipated subdued peaks amid high humidity (80–100%) and weak solar insolation. Challenges would require rare post hoc data revisions from sensor recalibrations or disputes over the resolving station's reading, with final INMET bulletins expected to confirm within 24–48 hours.
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 28 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 26, 2026, 12:14 AM ET
Volume
$55,090End Date
Apr 28, 2026Market Opened
Apr 26, 2026, 12:14 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 28 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 INMET observations from São Paulo's primary meteorological stations, including the capital's automated network, recorded a maximum temperature of 27°C on April 28, 2026, driving trader consensus to near-certainty on this outcome as markets resolved. This aligns with lingering effects of a cold front that brought unstable conditions, widespread cloud cover, and isolated showers, suppressing daytime heating despite urban heat island influences at sites like Congonhas Airport. April climatology typically sees highs of 25–26°C, and model forecasts from CPTEC-INMET had anticipated subdued peaks amid high humidity (80–100%) and weak solar insolation. Challenges would require rare post hoc data revisions from sensor recalibrations or disputes over the resolving station's reading, with final INMET bulletins expected to confirm within 24–48 hours.
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 28 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
$55,090End Date
Apr 28, 2026Market Opened
Apr 26, 2026, 12:14 AM ETResolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official INMET observations from São Paulo's primary meteorological stations, including the capital's automated network, recorded a maximum temperature of 27°C on April 28, 2026, driving trader consensus to near-certainty on this outcome as markets resolved. This aligns with lingering effects of a cold front that brought unstable conditions, widespread cloud cover, and isolated showers, suppressing daytime heating despite urban heat island influences at sites like Congonhas Airport. April climatology typically sees highs of 25–26°C, and model forecasts from CPTEC-INMET had anticipated subdued peaks amid high humidity (80–100%) and weak solar insolation. Challenges would require rare post hoc data revisions from sensor recalibrations or disputes over the resolving station's reading, with final INMET bulletins expected to confirm within 24–48 hours.
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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