Trader consensus on Polymarket reflects tight uncertainty between 26°C and 27°C as the highest temperature in São Paulo today, driven by INMET and Climatempo forecasts projecting maxima of 26-28°C under a stable high-pressure system with partly cloudy skies, light southeast winds, and near-zero rain probability. Differentiating factors include the timing of morning fog clearance, which affects midday solar insolation and peak heating—earlier dissipation favors 27°C via enhanced urban heat island effects, while persistent low clouds or breezes could cap it at 26°C. This aligns with mid-April climatology, where daily highs average 25-26°C amid autumn cooling trends, per historical NOAA and INMET data. Hourly station readings from official sites like Congonhas Airport will refine outcomes by evening.
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 15?
Highest temperature in Sao Paulo on April 15?
27°C 42%
26°C 36%
25°C 16%
28°C 11%
$32,931 Vol.
$32,931 Vol.
22°C or below
1%
23°C
<1%
24°C
1%
25°C
16%
26°C
36%
27°C
42%
28°C
11%
29°C
2%
30°C
1%
31°C
<1%
32°C or higher
<1%
27°C 42%
26°C 36%
25°C 16%
28°C 11%
$32,931 Vol.
$32,931 Vol.
22°C or below
1%
23°C
<1%
24°C
1%
25°C
16%
26°C
36%
27°C
42%
28°C
11%
29°C
2%
30°C
1%
31°C
<1%
32°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.
Market Opened: Apr 13, 2026, 12:05 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 reflects tight uncertainty between 26°C and 27°C as the highest temperature in São Paulo today, driven by INMET and Climatempo forecasts projecting maxima of 26-28°C under a stable high-pressure system with partly cloudy skies, light southeast winds, and near-zero rain probability. Differentiating factors include the timing of morning fog clearance, which affects midday solar insolation and peak heating—earlier dissipation favors 27°C via enhanced urban heat island effects, while persistent low clouds or breezes could cap it at 26°C. This aligns with mid-April climatology, where daily highs average 25-26°C amid autumn cooling trends, per historical NOAA and INMET data. Hourly station readings from official sites like Congonhas Airport will refine outcomes by evening.
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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