Official temperature observations from London City Airport station confirmed a daily maximum of 30°C on May 23 under a strengthening high-pressure system advecting warm southerly air across southeast England. Met Office guidance and ensemble model runs aligned closely with this outcome, citing mostly clear skies, light winds, and peak insolation that supported afternoon readings clustered around the 28–30°C range. Trader consensus at 100% on 30°C reflects the tight clustering of verified data and minimal spread in post-event analyses. Scenarios that could realistically alter the result remain limited to rare station calibration adjustments or unverified microclimate variations, though historical precedent for late-May blocking highs makes such revisions improbable.
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 23?
Highest temperature in London on May 23?
30°C 100.0%
22°C or below <1%
23°C <1%
24°C <1%
$294,821 Vol.
$294,821 Vol.
May 23, 2026
22°C or below
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
No
28°C
No
29°C
No
30°C
Yes
31°C
No
32°C or higher
No
30°C 100.0%
22°C or below <1%
23°C <1%
24°C <1%
$294,821 Vol.
$294,821 Vol.
May 23, 2026
22°C or below
$15,234 Vol.
No
23°C
$10,279 Vol.
No
24°C
$6,186 Vol.
No
25°C
$8,678 Vol.
No
26°C
$14,041 Vol.
No
27°C
$22,705 Vol.
No
28°C
$25,523 Vol.
No
29°C
$114,218 Vol.
No
30°C
$29,384 Vol.
Yes
31°C
$23,818 Vol.
No
32°C or higher
$24,755 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 23 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 temperature observations from London City Airport station confirmed a daily maximum of 30°C on May 23 under a strengthening high-pressure system advecting warm southerly air across southeast England. Met Office guidance and ensemble model runs aligned closely with this outcome, citing mostly clear skies, light winds, and peak insolation that supported afternoon readings clustered around the 28–30°C range. Trader consensus at 100% on 30°C reflects the tight clustering of verified data and minimal spread in post-event analyses. Scenarios that could realistically alter the result remain limited to rare station calibration adjustments or unverified microclimate variations, though historical precedent for late-May blocking highs makes such revisions improbable.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 23 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 21, 2026, 6:04 AM ET
Volume
$294,821End Date
May 23, 2026Market Opened
May 21, 2026, 6:04 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 23 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 temperature observations from London City Airport station confirmed a daily maximum of 30°C on May 23 under a strengthening high-pressure system advecting warm southerly air across southeast England. Met Office guidance and ensemble model runs aligned closely with this outcome, citing mostly clear skies, light winds, and peak insolation that supported afternoon readings clustered around the 28–30°C range. Trader consensus at 100% on 30°C reflects the tight clustering of verified data and minimal spread in post-event analyses. Scenarios that could realistically alter the result remain limited to rare station calibration adjustments or unverified microclimate variations, though historical precedent for late-May blocking highs makes such revisions improbable.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 23 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
$294,821End Date
May 23, 2026Market Opened
May 21, 2026, 6:04 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official temperature observations from London City Airport station confirmed a daily maximum of 30°C on May 23 under a strengthening high-pressure system advecting warm southerly air across southeast England. Met Office guidance and ensemble model runs aligned closely with this outcome, citing mostly clear skies, light winds, and peak insolation that supported afternoon readings clustered around the 28–30°C range. Trader consensus at 100% on 30°C reflects the tight clustering of verified data and minimal spread in post-event analyses. Scenarios that could realistically alter the result remain limited to rare station calibration adjustments or unverified microclimate variations, though historical precedent for late-May blocking highs makes such revisions improbable.
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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