Official AEMET observations from the Adolfo Suárez Madrid-Barajas Airport station—the market's resolution source—recorded a peak temperature of 27.7°C around 16:00–17:00 local time on April 20, 2026, rounding to 28°C under standard meteorological conventions and locking in trader consensus at 100% implied probability for that outcome. This aligned precisely with pre-event AEMET municipal forecasts projecting 28°C highs amid a persistent high-pressure ridge, clear skies, and light winds that maximized daytime solar heating in the region. Nearby stations like Alcalá de Henares hit 28.5°C, reinforcing the data. Realistic challenges are minimal post-validation but could include rare official revisions from equipment calibration issues or overlooked hourly peaks, though AEMET's quality controls make this unlikely.
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 20?
Highest temperature in Madrid on April 20?
28°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$113,828 Vol.
$113,828 Vol.
Apr 20, 2026
21°C or below
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
No
28°C
Yes
29°C
No
30°C
No
31°C or higher
No
28°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$113,828 Vol.
$113,828 Vol.
Apr 20, 2026
21°C or below
$4,015 Vol.
No
22°C
$13,336 Vol.
No
23°C
$5,217 Vol.
No
24°C
$4,714 Vol.
No
25°C
$6,279 Vol.
No
26°C
$20,046 Vol.
No
27°C
$15,496 Vol.
No
28°C
$15,326 Vol.
Yes
29°C
$11,557 Vol.
No
30°C
$10,604 Vol.
No
31°C or higher
$7,239 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 20 Apr '26.
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.Official AEMET observations from the Adolfo Suárez Madrid-Barajas Airport station—the market's resolution source—recorded a peak temperature of 27.7°C around 16:00–17:00 local time on April 20, 2026, rounding to 28°C under standard meteorological conventions and locking in trader consensus at 100% implied probability for that outcome. This aligned precisely with pre-event AEMET municipal forecasts projecting 28°C highs amid a persistent high-pressure ridge, clear skies, and light winds that maximized daytime solar heating in the region. Nearby stations like Alcalá de Henares hit 28.5°C, reinforcing the data. Realistic challenges are minimal post-validation but could include rare official revisions from equipment calibration issues or overlooked hourly peaks, though AEMET's quality controls make this unlikely.
This market will resolve to the temperature range that contains the highest temperature recorded at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 20 Apr '26.
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.
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 18, 2026, 12:59 AM ET
Volume
$113,828End Date
Apr 20, 2026Market Opened
Apr 18, 2026, 12:59 AM ETResolution Source
https://www.wunderground.com/history/daily/es/madrid/LEMDResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 20 Apr '26.
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.Official AEMET observations from the Adolfo Suárez Madrid-Barajas Airport station—the market's resolution source—recorded a peak temperature of 27.7°C around 16:00–17:00 local time on April 20, 2026, rounding to 28°C under standard meteorological conventions and locking in trader consensus at 100% implied probability for that outcome. This aligned precisely with pre-event AEMET municipal forecasts projecting 28°C highs amid a persistent high-pressure ridge, clear skies, and light winds that maximized daytime solar heating in the region. Nearby stations like Alcalá de Henares hit 28.5°C, reinforcing the data. Realistic challenges are minimal post-validation but could include rare official revisions from equipment calibration issues or overlooked hourly peaks, though AEMET's quality controls make this unlikely.
This market will resolve to the temperature range that contains the highest temperature recorded at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 20 Apr '26.
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.
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.
Volume
$113,828End Date
Apr 20, 2026Market Opened
Apr 18, 2026, 12:59 AM ETResolution Source
https://www.wunderground.com/history/daily/es/madrid/LEMDResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official AEMET observations from the Adolfo Suárez Madrid-Barajas Airport station—the market's resolution source—recorded a peak temperature of 27.7°C around 16:00–17:00 local time on April 20, 2026, rounding to 28°C under standard meteorological conventions and locking in trader consensus at 100% implied probability for that outcome. This aligned precisely with pre-event AEMET municipal forecasts projecting 28°C highs amid a persistent high-pressure ridge, clear skies, and light winds that maximized daytime solar heating in the region. Nearby stations like Alcalá de Henares hit 28.5°C, reinforcing the data. Realistic challenges are minimal post-validation but could include rare official revisions from equipment calibration issues or overlooked hourly peaks, though AEMET's quality controls make this unlikely.
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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