Trader sentiment clusters around 29–31°C for Sao Paulo's March 28 high, driven by INMET's latest forecast pinning the peak at 31°C under a stable high-pressure ridge suppressing clouds and boosting solar heating. Ensemble models like ECMWF and GFS show tight divergence—ECMWF warmer at 31–32°C, GFS cooler near 29°C—reflecting uncertainty in afternoon sea-breeze timing that could shave 1–2°C off peaks. Historical March averages hover at 28–29°C, but this week's +3°C anomaly from low humidity and light winds tilts odds upward, with upcoming 18Z model runs potentially shifting the balance as resolution nears midnight UTC.
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 30%
29°C 19%
30°C 19%
32°C 12%
24°C or below
2%
25°C
2%
26°C
2%
27°C
6%
28°C
9%
29°C
19%
30°C
19%
31°C
30%
32°C
12%
33°C
6%
34°C or higher
2%
31°C 30%
29°C 19%
30°C 19%
32°C 12%
24°C or below
2%
25°C
2%
26°C
2%
27°C
6%
28°C
9%
29°C
19%
30°C
19%
31°C
30%
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 sentiment clusters around 29–31°C for Sao Paulo's March 28 high, driven by INMET's latest forecast pinning the peak at 31°C under a stable high-pressure ridge suppressing clouds and boosting solar heating. Ensemble models like ECMWF and GFS show tight divergence—ECMWF warmer at 31–32°C, GFS cooler near 29°C—reflecting uncertainty in afternoon sea-breeze timing that could shave 1–2°C off peaks. Historical March averages hover at 28–29°C, but this week's +3°C anomaly from low humidity and light winds tilts odds upward, with upcoming 18Z model runs potentially shifting the balance as resolution nears midnight UTC.
Resumo experimental gerado por IA com dados do Polymarket · Atualizado
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