Trader consensus on Polymarket closely splits between 31°C (24.5%) and 30°C (24.0%) as the highest temperature in São Paulo on March 28, reflecting tight forecast model ensembles amid inherent daily variability. Latest runs from ECMWF and GFS, corroborated by INMET guidance, project daytime highs in the 29–32°C range under partly cloudy skies with light southerly winds and sea breeze moderation, potentially capping peaks just below recent urban heat island-boosted norms of 30–31°C. Historical March averages hover around 28°C, but lingering summer warmth and low precipitation risk elevate the outlook. Key differentiators include afternoon cloud cover evolution and exact timing of sea breeze onset; fresh model updates expected overnight could sharpen the distribution before the event resolves via official airport observations.
Resumo experimental gerado por IA com dados do Polymarket · AtualizadoHighest temperature in Sao Paulo on March 28?
Highest temperature in Sao Paulo on March 28?
31°C 25%
30°C 24%
29°C 19%
32°C 12%
24°C or below
<1%
25°C
1%
26°C
1%
27°C
6%
28°C
10%
29°C
19%
30°C
24%
31°C
25%
32°C
12%
33°C
6%
34°C or higher
2%
31°C 25%
30°C 24%
29°C 19%
32°C 12%
24°C or below
<1%
25°C
1%
26°C
1%
27°C
6%
28°C
10%
29°C
19%
30°C
24%
31°C
25%
32°C
12%
33°C
6%
34°C or higher
2%
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.
Mercado Aberto: Mar 24, 2026, 6:01 AM ET
Resolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...Resolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...Trader consensus on Polymarket closely splits between 31°C (24.5%) and 30°C (24.0%) as the highest temperature in São Paulo on March 28, reflecting tight forecast model ensembles amid inherent daily variability. Latest runs from ECMWF and GFS, corroborated by INMET guidance, project daytime highs in the 29–32°C range under partly cloudy skies with light southerly winds and sea breeze moderation, potentially capping peaks just below recent urban heat island-boosted norms of 30–31°C. Historical March averages hover around 28°C, but lingering summer warmth and low precipitation risk elevate the outlook. Key differentiators include afternoon cloud cover evolution and exact timing of sea breeze onset; fresh model updates expected overnight could sharpen the distribution before the event resolves via official airport observations.
Resumo experimental gerado por IA com dados do Polymarket · Atualizado
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