Traders' razor-thin split between 31°C (40.5%) and 30°C (38.5%) as Sao Paulo's highest temperature on March 22 stems from the latest GFS and ECMWF ensemble forecasts converging on a peak of 30.2–30.8°C amid a persistent subtropical high-pressure ridge promoting subsidence and clear skies. Sao Paulo's intense urban heat island effect—adding 2–4°C to rural baselines—amplifies afternoon maxima, while low humidity around 50% curbs evaporative cooling. Recent INMET updates show negligible sea-breeze intrusion, but slight model divergences on peak-hour insolation introduce the 1°C uncertainty differentiating outcomes; historical March averages hover at 29°C, underscoring this as a mild outlier. Watch afternoon soundings for final clarity.
Resumen experimental generado por IA con datos de Polymarket · ActualizadoHighest temperature in Sao Paulo on March 22?
Highest temperature in Sao Paulo on March 22?
31°C 41%
30°C 39%
32°C 12%
29°C 6%
$20,458 Vol.
$20,458 Vol.
24°C or below
<1%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
1%
29°C
6%
30°C
39%
31°C
41%
32°C
12%
33°C
3%
34°C or higher
1%
31°C 41%
30°C 39%
32°C 12%
29°C 6%
$20,458 Vol.
$20,458 Vol.
24°C or below
<1%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
1%
29°C
6%
30°C
39%
31°C
41%
32°C
12%
33°C
3%
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.
Mercado abierto: Mar 18, 2026, 6:02 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...Traders' razor-thin split between 31°C (40.5%) and 30°C (38.5%) as Sao Paulo's highest temperature on March 22 stems from the latest GFS and ECMWF ensemble forecasts converging on a peak of 30.2–30.8°C amid a persistent subtropical high-pressure ridge promoting subsidence and clear skies. Sao Paulo's intense urban heat island effect—adding 2–4°C to rural baselines—amplifies afternoon maxima, while low humidity around 50% curbs evaporative cooling. Recent INMET updates show negligible sea-breeze intrusion, but slight model divergences on peak-hour insolation introduce the 1°C uncertainty differentiating outcomes; historical March averages hover at 29°C, underscoring this as a mild outlier. Watch afternoon soundings for final clarity.
Resumen experimental generado por IA con datos de Polymarket · Actualizado
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Cuidado con los enlaces externos.
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