Official Met Office observations confirm that London's highest temperature on April 1, 2026, reached 14°C at stations including Heathrow and local networks like NW3, amid persistent cloud cover, light precipitation, and a cool northerly airflow that capped daytime warming. This aligns precisely with pre-event forecast consensus from ECMWF and GFS ensemble models clustering at 13-15°C, reflecting typical early April climatology with average highs around 13°C. Trader consensus at 100% implied probability on 14°C embodies this skin-in-the-game validation of verified thermometer data, leaving negligible room for other outcomes. Realistic challenges are minimal but could arise from rare post-validation revisions uncovering a higher reading at an overlooked official site before market resolution.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in London on April 1?
Highest temperature in London on April 1?
14°C 100.0%
$303,853 Vol.
$303,853 Vol.
14°C
100%
14°C 100.0%
$303,853 Vol.
$303,853 Vol.
14°C
100%
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 London City Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/gb/london/EGLC.
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: Mar 29, 2026, 3:40 PM ET
Resolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
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 London City Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/gb/london/EGLC.
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/gb/london/EGLCResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official Met Office observations confirm that London's highest temperature on April 1, 2026, reached 14°C at stations including Heathrow and local networks like NW3, amid persistent cloud cover, light precipitation, and a cool northerly airflow that capped daytime warming. This aligns precisely with pre-event forecast consensus from ECMWF and GFS ensemble models clustering at 13-15°C, reflecting typical early April climatology with average highs around 13°C. Trader consensus at 100% implied probability on 14°C embodies this skin-in-the-game validation of verified thermometer data, leaving negligible room for other outcomes. Realistic challenges are minimal but could arise from rare post-validation revisions uncovering a higher reading at an overlooked official site before market resolution.
Experimental AI-generated summary referencing Polymarket data · Updated
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