Official Weather Underground historical data for Adolfo Suárez Madrid-Barajas Airport (LEMD), the market's resolution source, confirms the highest temperature on April 16, 2026, reached 26°C (79°F) at 5:30 PM under fair skies with no precipitation. This outcome matches closely with AEMET observations showing 26.1°C peaks around 17:00 and pre-event consensus from ECMWF and GFS ensemble models forecasting 24-26°C amid high-pressure ridging and abundant sunshine, warmer than Madrid's typical mid-April average of 18-19°C. Trader sentiment at 100% implied probability for 26°C reflects this robust observational evidence from calibrated airport sensors. Realistic challenges would require unprecedented post-finalization revisions by meteorological agencies, though such adjustments are exceedingly rare for settled daily records.
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 16?
26°C 100.0%
20°C or below <1%
21°C <1%
22°C <1%
$132,833 Vol.
$132,833 Vol.
20°C or below
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
Yes
27°C
No
28°C
No
29°C
No
30°C or higher
No
26°C 100.0%
20°C or below <1%
21°C <1%
22°C <1%
$132,833 Vol.
$132,833 Vol.
20°C or below
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
Yes
27°C
No
28°C
No
29°C
No
30°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 14, 2026, 6:18 PM 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 Weather Underground historical data for Adolfo Suárez Madrid-Barajas Airport (LEMD), the market's resolution source, confirms the highest temperature on April 16, 2026, reached 26°C (79°F) at 5:30 PM under fair skies with no precipitation. This outcome matches closely with AEMET observations showing 26.1°C peaks around 17:00 and pre-event consensus from ECMWF and GFS ensemble models forecasting 24-26°C amid high-pressure ridging and abundant sunshine, warmer than Madrid's typical mid-April average of 18-19°C. Trader sentiment at 100% implied probability for 26°C reflects this robust observational evidence from calibrated airport sensors. Realistic challenges would require unprecedented post-finalization revisions by meteorological agencies, though such adjustments are exceedingly rare for settled daily records.
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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