Official INMET observations from São Paulo's Congonhas Airport (SBSP) station confirm the highest temperature on April 10 reached 21°C, amid persistent cloud cover and light northerly winds that limited solar heating despite typical autumn highs of 24–26°C. This aligns with pre-event forecast ensembles showing a cooling trend from an incoming moisture system, shifting trader consensus to near-certainty on this outcome as real-time data accumulated through the afternoon. Polymarket's 100% implied probability reflects aggregated bettor alignment with verified measurements, acknowledging the precision of surface station records. Realistic challenges include a rare post-validation revision if peripheral sensors like Guarulhos Airport log a higher compliant reading before INMET's final bulletin, though model post-analysis and historical data validation support the current positioning.
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 10?
Highest temperature in Sao Paulo on April 10?
21°C 100.0%
19°C or below <1%
20°C <1%
22°C <1%
$93,542 Vol.
$93,542 Vol.
19°C or below
No
20°C
No
21°C
Yes
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
No
28°C
No
29°C or higher
No
21°C 100.0%
19°C or below <1%
20°C <1%
22°C <1%
$93,542 Vol.
$93,542 Vol.
19°C or below
No
20°C
No
21°C
Yes
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
No
28°C
No
29°C or higher
No
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 6, 2026, 12:08 AM ET
Resolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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...Outcome proposed: No
No dispute
Final outcome: No
Official INMET observations from São Paulo's Congonhas Airport (SBSP) station confirm the highest temperature on April 10 reached 21°C, amid persistent cloud cover and light northerly winds that limited solar heating despite typical autumn highs of 24–26°C. This aligns with pre-event forecast ensembles showing a cooling trend from an incoming moisture system, shifting trader consensus to near-certainty on this outcome as real-time data accumulated through the afternoon. Polymarket's 100% implied probability reflects aggregated bettor alignment with verified measurements, acknowledging the precision of surface station records. Realistic challenges include a rare post-validation revision if peripheral sensors like Guarulhos Airport log a higher compliant reading before INMET's final bulletin, though model post-analysis and historical data validation support the current positioning.
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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