Trader consensus on Polymarket favors 29°C (44%) and 30°C (31.5%) as the highest temperature in São Paulo today, aligning closely with forecast model ensembles from Climatempo and AccuWeather projecting daily highs of 29-30°C amid high humidity near 100% and light NNW winds at 5 km/h. Morning sunshine promotes warming, but anticipated afternoon convective showers (80-82% probability, 10 mm accumulation) from unstable atmospheric conditions may cap peaks, consistent with yesterday's 29°C high and INMET's outlook for above-normal April rainfall. Urban heat island effects elevate readings above seasonal averages of 25-26°C at official stations, though model discrepancies introduce uncertainty—stray clear skies could push toward 30°C, while heavier rain might limit to 28°C. Hourly INMET observations will refine probabilities as the day unfolds.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Sao Paulo on April 3?
Highest temperature in Sao Paulo on April 3?
29°C 44%
30°C 33%
28°C 17%
27°C 5.9%
$29,998 Vol.
$29,998 Vol.
24°C or below
<1%
25°C
<1%
26°C
1%
27°C
6%
28°C
17%
29°C
44%
30°C
33%
31°C
6%
32°C
1%
33°C
<1%
34°C or higher
<1%
29°C 44%
30°C 33%
28°C 17%
27°C 5.9%
$29,998 Vol.
$29,998 Vol.
24°C or below
<1%
25°C
<1%
26°C
1%
27°C
6%
28°C
17%
29°C
44%
30°C
33%
31°C
6%
32°C
1%
33°C
<1%
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.
Market Opened: Mar 29, 2026, 3:02 PM 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 favors 29°C (44%) and 30°C (31.5%) as the highest temperature in São Paulo today, aligning closely with forecast model ensembles from Climatempo and AccuWeather projecting daily highs of 29-30°C amid high humidity near 100% and light NNW winds at 5 km/h. Morning sunshine promotes warming, but anticipated afternoon convective showers (80-82% probability, 10 mm accumulation) from unstable atmospheric conditions may cap peaks, consistent with yesterday's 29°C high and INMET's outlook for above-normal April rainfall. Urban heat island effects elevate readings above seasonal averages of 25-26°C at official stations, though model discrepancies introduce uncertainty—stray clear skies could push toward 30°C, while heavier rain might limit to 28°C. Hourly INMET observations will refine probabilities as the day unfolds.
Experimental AI-generated summary referencing Polymarket data · Updated
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