Met Office observations from Heathrow—the official reference station for London maxima—confirm the highest temperature on March 29 reached 11°C, peaking briefly in early afternoon amid overcast skies, northerly winds, and limited solar heating that kept readings in the 10–11°C range through 16:00. This aligns with late-March climatology, where historical Heathrow averages hover near 11°C, and recent forecast ensembles from ECMWF and UKMO projected no higher amid a cool, showery pattern across southeast England. Trader consensus at 100% implied probability reflects this verified data, with skin-in-the-game bets converging post-provisional release. Realistic challenges include quality-control revisions uncovering a marginally higher screened maximum or alternative station data (e.g., St James's Park), though model hindcasts and hourly logs make shifts above 11°C improbable. Final daily summary expected soon from Met Office.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in London on March 29?
Highest temperature in London on March 29?
11°C 100.0%
12°C <1%
13°C <1%
14°C <1%
$497,716 Vol.
$497,716 Vol.
11°C
100%
12°C
<1%
13°C
<1%
14°C
<1%
15°C
<1%
16°C or higher
<1%
11°C 100.0%
12°C <1%
13°C <1%
14°C <1%
$497,716 Vol.
$497,716 Vol.
11°C
100%
12°C
<1%
13°C
<1%
14°C
<1%
15°C
<1%
16°C or higher
<1%
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 25, 2026, 6:01 AM ET
Resolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...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...Met Office observations from Heathrow—the official reference station for London maxima—confirm the highest temperature on March 29 reached 11°C, peaking briefly in early afternoon amid overcast skies, northerly winds, and limited solar heating that kept readings in the 10–11°C range through 16:00. This aligns with late-March climatology, where historical Heathrow averages hover near 11°C, and recent forecast ensembles from ECMWF and UKMO projected no higher amid a cool, showery pattern across southeast England. Trader consensus at 100% implied probability reflects this verified data, with skin-in-the-game bets converging post-provisional release. Realistic challenges include quality-control revisions uncovering a marginally higher screened maximum or alternative station data (e.g., St James's Park), though model hindcasts and hourly logs make shifts above 11°C improbable. Final daily summary expected soon from Met Office.
Experimental AI-generated summary referencing Polymarket data · Updated
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