Official observational data from Argentina's Servicio Meteorológico Nacional (SMN) at Ministro Pistarini International Airport (SAEZ) confirm the highest temperature reached exactly 20°C on April 28, anchoring trader consensus at virtually 100% implied probability for that outcome. This aligns with pre-event forecast guidance from SMN and global models like GFS and ECMWF, which projected mild late-autumn conditions under a persistent high-pressure ridge suppressing warmer air advection, with daytime highs capped around 20°C amid light winds and partial cloud cover. Buenos Aires' April climatology averages 21°C maxima, but recent cooler southerly flows reinforced this positioning. Post-measurement revisions from data validation or sensor recalibration represent the only realistic, albeit remote, challenges to resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Buenos Aires on April 28?
20°C 100.0%
11°C or below <1%
12°C <1%
13°C <1%
$93,237 Vol.
$93,237 Vol.
11°C or below
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
Yes
21°C or higher
No
20°C 100.0%
11°C or below <1%
12°C <1%
13°C <1%
$93,237 Vol.
$93,237 Vol.
11°C or below
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
Yes
21°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 Minister Pistarini Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/ar/ezeiza/SAEZ.
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 26, 2026, 12:38 AM ET
Resolution Source
https://www.wunderground.com/history/daily/ar/ezeiza/SAEZResolver
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 Minister Pistarini Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/ar/ezeiza/SAEZ.
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/ar/ezeiza/SAEZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official observational data from Argentina's Servicio Meteorológico Nacional (SMN) at Ministro Pistarini International Airport (SAEZ) confirm the highest temperature reached exactly 20°C on April 28, anchoring trader consensus at virtually 100% implied probability for that outcome. This aligns with pre-event forecast guidance from SMN and global models like GFS and ECMWF, which projected mild late-autumn conditions under a persistent high-pressure ridge suppressing warmer air advection, with daytime highs capped around 20°C amid light winds and partial cloud cover. Buenos Aires' April climatology averages 21°C maxima, but recent cooler southerly flows reinforced this positioning. Post-measurement revisions from data validation or sensor recalibration represent the only realistic, albeit remote, challenges to resolution.
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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