Official Met Office observations and Wunderground records from London City Airport station—the market's designated source—confirm the highest temperature on May 8 reached 18°C, driving trader consensus to 100% implied probability for this outcome. Partly cloudy skies transitioning to overcast conditions, light winds, and scattered showers under a weakening high-pressure ridge capped warming potential, aligning with UKV and ECMWF model consensus forecasts of 16–19°C and London's early May climatological average of about 17°C. Finalized hourly data released post-midnight on May 9 solidifies this positioning; only rare post-finalization revisions, which resolution rules ignore, could challenge it, though no higher readings emerged from key sites like Heathrow or St James's Park.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in London on May 8?
Highest temperature in London on May 8?
18°C 100.0%
13°C or below <1%
14°C <1%
15°C <1%
$286,947 Vol.
$286,947 Vol.
May 8, 2026
13°C or below
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
Yes
19°C
No
20°C
No
21°C
No
22°C
No
23°C or higher
No
18°C 100.0%
13°C or below <1%
14°C <1%
15°C <1%
$286,947 Vol.
$286,947 Vol.
May 8, 2026
13°C or below
$19,079 Vol.
No
14°C
$13,246 Vol.
No
15°C
$12,926 Vol.
No
16°C
$25,539 Vol.
No
17°C
$60,878 Vol.
No
18°C
$39,664 Vol.
Yes
19°C
$45,989 Vol.
No
20°C
$32,673 Vol.
No
21°C
$16,518 Vol.
No
22°C
$10,074 Vol.
No
23°C or higher
$10,362 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 8 May '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 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.Official Met Office observations and Wunderground records from London City Airport station—the market's designated source—confirm the highest temperature on May 8 reached 18°C, driving trader consensus to 100% implied probability for this outcome. Partly cloudy skies transitioning to overcast conditions, light winds, and scattered showers under a weakening high-pressure ridge capped warming potential, aligning with UKV and ECMWF model consensus forecasts of 16–19°C and London's early May climatological average of about 17°C. Finalized hourly data released post-midnight on May 9 solidifies this positioning; only rare post-finalization revisions, which resolution rules ignore, could challenge it, though no higher readings emerged from key sites like Heathrow or St James's Park.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 8 May '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 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.
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: May 6, 2026, 12:32 AM ET
Volume
$286,947End Date
May 8, 2026Market Opened
May 6, 2026, 12:32 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
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 London City Airport Station in degrees Celsius on 8 May '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 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.Official Met Office observations and Wunderground records from London City Airport station—the market's designated source—confirm the highest temperature on May 8 reached 18°C, driving trader consensus to 100% implied probability for this outcome. Partly cloudy skies transitioning to overcast conditions, light winds, and scattered showers under a weakening high-pressure ridge capped warming potential, aligning with UKV and ECMWF model consensus forecasts of 16–19°C and London's early May climatological average of about 17°C. Finalized hourly data released post-midnight on May 9 solidifies this positioning; only rare post-finalization revisions, which resolution rules ignore, could challenge it, though no higher readings emerged from key sites like Heathrow or St James's Park.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 8 May '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 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.
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.
Volume
$286,947End Date
May 8, 2026Market Opened
May 6, 2026, 12:32 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official Met Office observations and Wunderground records from London City Airport station—the market's designated source—confirm the highest temperature on May 8 reached 18°C, driving trader consensus to 100% implied probability for this outcome. Partly cloudy skies transitioning to overcast conditions, light winds, and scattered showers under a weakening high-pressure ridge capped warming potential, aligning with UKV and ECMWF model consensus forecasts of 16–19°C and London's early May climatological average of about 17°C. Finalized hourly data released post-midnight on May 9 solidifies this positioning; only rare post-finalization revisions, which resolution rules ignore, could challenge it, though no higher readings emerged from key sites like Heathrow or St James's Park.
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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