**Official KNMI measurements at Amsterdam Airport Schiphol, the reference station for such markets, recorded a daily maximum temperature of 13°C on April 19, 2026, driving trader consensus to 100% implied probability for this outcome.** This aligns with pre-event ECMWF and GFS ensemble forecasts centering highs around 13°C amid persistent northwesterly winds at 3 Beaufort, advecting cool North Sea maritime air under partly cloudy skies—morning readings near 10°C confirmed the subdued warming. April climatology supports this, with historical Schiphol averages near 12–13°C. Realistic challenges are minimal post-event but could include rare instrument recalibration or data audit revealing an anomaly; otherwise, resolution is imminent per KNMI protocols.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Amsterdam on April 19?
13°C 100.0%
8°C or below <1%
9°C <1%
10°C <1%
$62,323 Vol.
$62,323 Vol.
8°C or below
No
9°C
No
10°C
No
11°C
No
12°C
No
13°C
Yes
14°C
No
15°C
No
16°C
No
17°C
No
18°C or higher
No
13°C 100.0%
8°C or below <1%
9°C <1%
10°C <1%
$62,323 Vol.
$62,323 Vol.
8°C or below
No
9°C
No
10°C
No
11°C
No
12°C
No
13°C
Yes
14°C
No
15°C
No
16°C
No
17°C
No
18°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 Amsterdam Airport Schiphol Station once information is finalized, available here: https://www.wunderground.com/history/daily/nl/schiphol/EHAM.
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 17, 2026, 12:33 AM ET
Resolution Source
https://www.wunderground.com/history/daily/nl/schiphol/EHAMResolver
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 Amsterdam Airport Schiphol Station once information is finalized, available here: https://www.wunderground.com/history/daily/nl/schiphol/EHAM.
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/nl/schiphol/EHAMResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
**Official KNMI measurements at Amsterdam Airport Schiphol, the reference station for such markets, recorded a daily maximum temperature of 13°C on April 19, 2026, driving trader consensus to 100% implied probability for this outcome.** This aligns with pre-event ECMWF and GFS ensemble forecasts centering highs around 13°C amid persistent northwesterly winds at 3 Beaufort, advecting cool North Sea maritime air under partly cloudy skies—morning readings near 10°C confirmed the subdued warming. April climatology supports this, with historical Schiphol averages near 12–13°C. Realistic challenges are minimal post-event but could include rare instrument recalibration or data audit revealing an anomaly; otherwise, resolution is imminent per KNMI protocols.
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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