Trader sentiment clusters tightly around 28-29°C highs for São Paulo on March 26, driven by the latest ensemble forecasts from ECMWF, GFS, and Brazil's INMET/CPTEC models converging on peaks of 28-29°C amid lingering high-pressure influences and light southerly winds moderating urban heat island effects. Differentiating factors include potential sea breeze intensification pushing toward 27°C or below (low odds at 17.5% and under), versus clearer skies and subsidence favoring 30°C+ (21% combined), as seen in recent 12-24 hour model updates showing slight warm biases from drier air advection. Historical March averages hover at 27°C, but partial cloud cover adds uncertainty, with official observations resolving via INMET stations.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Sao Paulo on March 26?
Highest temperature in Sao Paulo on March 26?
29°C 24%
30°C 22%
28°C 21%
32°C or higher 17%
22°C or below
1%
23°C
15%
24°C
14%
25°C
16%
26°C
16%
27°C
16%
28°C
21%
29°C
24%
30°C
22%
31°C
16%
32°C or higher
17%
29°C 24%
30°C 22%
28°C 21%
32°C or higher 17%
22°C or below
1%
23°C
15%
24°C
14%
25°C
16%
26°C
16%
27°C
16%
28°C
21%
29°C
24%
30°C
22%
31°C
16%
32°C or higher
17%
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: Mar 22, 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 tightly around 28-29°C highs for São Paulo on March 26, driven by the latest ensemble forecasts from ECMWF, GFS, and Brazil's INMET/CPTEC models converging on peaks of 28-29°C amid lingering high-pressure influences and light southerly winds moderating urban heat island effects. Differentiating factors include potential sea breeze intensification pushing toward 27°C or below (low odds at 17.5% and under), versus clearer skies and subsidence favoring 30°C+ (21% combined), as seen in recent 12-24 hour model updates showing slight warm biases from drier air advection. Historical March averages hover at 27°C, but partial cloud cover adds uncertainty, with official observations resolving via INMET stations.
Experimental AI-generated summary referencing Polymarket data · Updated
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