Trader consensus clusters tightly around 27°C (28.5% implied probability) and 28°C (32.0%) for São Paulo's highest temperature on April 5, reflecting latest INMET/CPTEC forecasts and global models like GFS/ECMWF projecting peaks near 27.5°C amid a persistent subtropical high-pressure ridge fostering clear skies and above-average early April heat. Differentiating factors include sea breeze timing—earlier onshore flow could cap highs at 27°C via coastal cooling, while delayed influx allows urban heat island effects to push 28°C—compounded by potential afternoon cumulus clouds suppressing insolation. Historical April maxima average 25°C, but current ENSO-neutral conditions mirror recent days' 26-28°C trends; watch daily model refreshes for shifts before resolution via official São Paulo-Guarulhos International Airport observations.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Sao Paulo on April 5?
Highest temperature in Sao Paulo on April 5?
28°C 34%
27°C 25%
26°C 20%
25°C 12%
22°C or below
1%
23°C
<1%
24°C
4%
25°C
12%
26°C
20%
27°C
31%
28°C
34%
29°C
11%
30°C
3%
31°C
1%
32°C or higher
1%
28°C 34%
27°C 25%
26°C 20%
25°C 12%
22°C or below
1%
23°C
<1%
24°C
4%
25°C
12%
26°C
20%
27°C
31%
28°C
34%
29°C
11%
30°C
3%
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 1, 2026, 6:02 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 clusters tightly around 27°C (28.5% implied probability) and 28°C (32.0%) for São Paulo's highest temperature on April 5, reflecting latest INMET/CPTEC forecasts and global models like GFS/ECMWF projecting peaks near 27.5°C amid a persistent subtropical high-pressure ridge fostering clear skies and above-average early April heat. Differentiating factors include sea breeze timing—earlier onshore flow could cap highs at 27°C via coastal cooling, while delayed influx allows urban heat island effects to push 28°C—compounded by potential afternoon cumulus clouds suppressing insolation. Historical April maxima average 25°C, but current ENSO-neutral conditions mirror recent days' 26-28°C trends; watch daily model refreshes for shifts before resolution via official São Paulo-Guarulhos International Airport observations.
Experimental AI-generated summary referencing Polymarket data · Updated
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