Official AEMET observations from Adolfo Suárez Madrid-Barajas Airport, the market's designated reference station, confirm the highest temperature on April 25 reached 25.3°C at 18:00 local time, placing it firmly in the 25°C outcome bin and driving trader consensus to 100% implied probability. This aligns with pre-event forecasts from ECMWF and GFS models projecting highs around 23–25°C amid a weakening high-pressure ridge and cooler northerly flow following warmer days like April 23's 25.8°C peak. Verified hourly measurements from automated sensors provide high-confidence data, with minimal uncertainty typical of post-event meteorological reporting. Realistic challenges would require an official data revision or audit uncovering a higher unrecorded peak, though such corrections are exceedingly rare for standard observations.
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 25?
25°C 100.0%
18°C or below <1%
19°C <1%
20°C <1%
$97,646 Vol.
$97,646 Vol.
18°C or below
No
19°C
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
Yes
26°C
No
27°C
No
28°C or higher
No
25°C 100.0%
18°C or below <1%
19°C <1%
20°C <1%
$97,646 Vol.
$97,646 Vol.
18°C or below
No
19°C
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
Yes
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 23, 2026, 12:13 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 AEMET observations from Adolfo Suárez Madrid-Barajas Airport, the market's designated reference station, confirm the highest temperature on April 25 reached 25.3°C at 18:00 local time, placing it firmly in the 25°C outcome bin and driving trader consensus to 100% implied probability. This aligns with pre-event forecasts from ECMWF and GFS models projecting highs around 23–25°C amid a weakening high-pressure ridge and cooler northerly flow following warmer days like April 23's 25.8°C peak. Verified hourly measurements from automated sensors provide high-confidence data, with minimal uncertainty typical of post-event meteorological reporting. Realistic challenges would require an official data revision or audit uncovering a higher unrecorded peak, though such corrections are exceedingly rare for standard observations.
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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