Trader consensus on Polymarket prices a 40.5% implied probability for a 30°C high in São Paulo on March 29, closely trailed by 29°C at 27.5%, driven by the latest Instituto Nacional de Meteorologia (INMET) forecasts projecting afternoon peaks near 30°C amid a dominant high-pressure system over southeastern Brazil. This setup suppresses cloud cover and convection, fostering clear skies and low humidity that maximize solar insolation and daytime heating, while the city's pronounced urban heat island effect routinely boosts observed maxima 1–2°C above surrounding areas. Recent days confirm the pattern, with 29°C highs on March 27 under similar dry conditions despite March 2026 averaging cooler than historical norms around 26–27°C for late-month days. Model consensus holds steady, though sea breeze incursions or unexpected afternoon clouds could cap temperatures at 29°C or below; final INMET observational data expected overnight into March 29 will sharpen resolution.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten · AktualisiertHighest temperature in Sao Paulo on March 29?
Highest temperature in Sao Paulo on March 29?
30°C 37%
29°C 27%
31°C 21%
28°C 13%
$26,439 Vol.
$26,439 Vol.
24°C or below
<1%
25°C
<1%
26°C
<1%
27°C
2%
28°C
13%
29°C
27%
30°C
37%
31°C
21%
32°C
3%
33°C
1%
34°C or higher
<1%
30°C 37%
29°C 27%
31°C 21%
28°C 13%
$26,439 Vol.
$26,439 Vol.
24°C or below
<1%
25°C
<1%
26°C
<1%
27°C
2%
28°C
13%
29°C
27%
30°C
37%
31°C
21%
32°C
3%
33°C
1%
34°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.
Markt eröffnet: Mar 25, 2026, 6:01 AM 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...Trader consensus on Polymarket prices a 40.5% implied probability for a 30°C high in São Paulo on March 29, closely trailed by 29°C at 27.5%, driven by the latest Instituto Nacional de Meteorologia (INMET) forecasts projecting afternoon peaks near 30°C amid a dominant high-pressure system over southeastern Brazil. This setup suppresses cloud cover and convection, fostering clear skies and low humidity that maximize solar insolation and daytime heating, while the city's pronounced urban heat island effect routinely boosts observed maxima 1–2°C above surrounding areas. Recent days confirm the pattern, with 29°C highs on March 27 under similar dry conditions despite March 2026 averaging cooler than historical norms around 26–27°C for late-month days. Model consensus holds steady, though sea breeze incursions or unexpected afternoon clouds could cap temperatures at 29°C or below; final INMET observational data expected overnight into March 29 will sharpen resolution.
Experimentelle KI-generierte Zusammenfassung mit Polymarket-Daten · Aktualisiert
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