The market's near-certain 24°C outcome reflects official maximum temperature observations from São Paulo stations, which aligned precisely with that threshold amid a southward-moving cold air mass that suppressed daytime heating on August 23. Forecasts from sources including the Centro de Gerenciamento de Emergências Climáticas consistently projected a high near 23–24°C under mostly cloudy to overcast skies, with afternoon readings peaking in that narrow range before rapid cooling overnight. This consensus is reinforced by real-time surface data showing limited solar insolation and southeasterly flow advecting cooler maritime air. Only an unanticipated revision in the final official dataset or station-specific anomaly could shift resolution, though such adjustments remain rare given standardized measurement protocols.
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 August 23?
24°C 100.0%
27°C <1%
20°C or below <1%
21°C <1%
$12,302 Vol.
$12,302 Vol.
20°C or below
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
100%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°C or higher
<1%
24°C 100.0%
27°C <1%
20°C or below <1%
21°C <1%
$12,302 Vol.
$12,302 Vol.
20°C or below
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
100%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°C or higher
<1%
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=sbgr
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Aug 21, 2026, 11:55 PM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=sbgr
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...The market's near-certain 24°C outcome reflects official maximum temperature observations from São Paulo stations, which aligned precisely with that threshold amid a southward-moving cold air mass that suppressed daytime heating on August 23. Forecasts from sources including the Centro de Gerenciamento de Emergências Climáticas consistently projected a high near 23–24°C under mostly cloudy to overcast skies, with afternoon readings peaking in that narrow range before rapid cooling overnight. This consensus is reinforced by real-time surface data showing limited solar insolation and southeasterly flow advecting cooler maritime air. Only an unanticipated revision in the final official dataset or station-specific anomaly could shift resolution, though such adjustments remain rare given standardized measurement protocols.
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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