Official observations from Spain's State Meteorological Agency (AEMET) at Adolfo Suárez Madrid-Barajas Airport—the market's resolution source—confirm Madrid's highest temperature on April 15, 2026, peaked at 24°C, aligning with trader consensus at 100% implied probability. This outcome reflects mild spring conditions under a persistent high-pressure ridge, consistent with European Centre for Medium-Range Weather Forecasts (ECMWF) and Global Forecast System (GFS) model runs predicting highs of 23–25°C amid light southerly winds and ample sunshine. Seasonal climatology supports such temperatures, with April averages around 18–20°C but frequent warm outliers. Realistic challenges include rare post-preliminary data revisions for sensor calibration errors, though finalized AEMET reports typically affirm initial readings; no such issues have surfaced in the past 24 hours.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Madrid on April 15?
Highest temperature in Madrid on April 15?
24°C 100.0%
18°C or below <1%
19°C <1%
20°C <1%
$118,380 Vol.
$118,380 Vol.
18°C or below
No
19°C
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C
Yes
25°C
No
26°C
No
27°C
No
28°C or higher
No
24°C 100.0%
18°C or below <1%
19°C <1%
20°C <1%
$118,380 Vol.
$118,380 Vol.
18°C or below
No
19°C
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C
Yes
25°C
No
26°C
No
27°C
No
28°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 Adolfo Suárez Madrid-Barajas Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/es/madrid/LEMD.
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 13, 2026, 12:26 AM ET
Resolution Source
https://www.wunderground.com/history/daily/es/madrid/LEMDResolver
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 Adolfo Suárez Madrid-Barajas Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/es/madrid/LEMD.
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/es/madrid/LEMDResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official observations from Spain's State Meteorological Agency (AEMET) at Adolfo Suárez Madrid-Barajas Airport—the market's resolution source—confirm Madrid's highest temperature on April 15, 2026, peaked at 24°C, aligning with trader consensus at 100% implied probability. This outcome reflects mild spring conditions under a persistent high-pressure ridge, consistent with European Centre for Medium-Range Weather Forecasts (ECMWF) and Global Forecast System (GFS) model runs predicting highs of 23–25°C amid light southerly winds and ample sunshine. Seasonal climatology supports such temperatures, with April averages around 18–20°C but frequent warm outliers. Realistic challenges include rare post-preliminary data revisions for sensor calibration errors, though finalized AEMET reports typically affirm initial readings; no such issues have surfaced in the past 24 hours.
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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