Met Office observations from key London stations, including Heathrow and central urban sites, confirm the highest temperature on April 9, 2026, peaked at 22°C during mid-afternoon amid a mild high-pressure ridge following an unusually warm spell earlier in the week. This provisional data, based on standardized SYNOP measurements, aligns with trader consensus implying 100% probability for 22°C, reflecting the aggregated skin-in-the-game assessment of real-time recordings across the city's official network. While final quality-controlled data from the Met Office is pending release within days, revisions are rare for clear-sky conditions like these; a challenge would require instrument malfunction or overlooked microclimate outlier, both improbable given multi-station corroboration and historical verification precedents.
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 April 9?
Highest temperature in London on April 9?
22°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$513,006 Vol.
$513,006 Vol.
Apr 9, 2026
15°C or below
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C
No
22°C
Yes
23°C
No
24°C
No
25°C or higher
No
22°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$513,006 Vol.
$513,006 Vol.
Apr 9, 2026
15°C or below
$32,526 Vol.
No
16°C
$12,434 Vol.
No
17°C
$44,856 Vol.
No
18°C
$28,355 Vol.
No
19°C
$44,730 Vol.
No
20°C
$44,908 Vol.
No
21°C
$105,668 Vol.
No
22°C
$62,636 Vol.
Yes
23°C
$63,121 Vol.
No
24°C
$42,316 Vol.
No
25°C or higher
$31,458 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 9 Apr '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.Met Office observations from key London stations, including Heathrow and central urban sites, confirm the highest temperature on April 9, 2026, peaked at 22°C during mid-afternoon amid a mild high-pressure ridge following an unusually warm spell earlier in the week. This provisional data, based on standardized SYNOP measurements, aligns with trader consensus implying 100% probability for 22°C, reflecting the aggregated skin-in-the-game assessment of real-time recordings across the city's official network. While final quality-controlled data from the Met Office is pending release within days, revisions are rare for clear-sky conditions like these; a challenge would require instrument malfunction or overlooked microclimate outlier, both improbable given multi-station corroboration and historical verification precedents.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 9 Apr '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: Apr 5, 2026, 12:10 AM ET
Volume
$513,006End Date
Apr 9, 2026Market Opened
Apr 5, 2026, 12:10 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 9 Apr '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.Met Office observations from key London stations, including Heathrow and central urban sites, confirm the highest temperature on April 9, 2026, peaked at 22°C during mid-afternoon amid a mild high-pressure ridge following an unusually warm spell earlier in the week. This provisional data, based on standardized SYNOP measurements, aligns with trader consensus implying 100% probability for 22°C, reflecting the aggregated skin-in-the-game assessment of real-time recordings across the city's official network. While final quality-controlled data from the Met Office is pending release within days, revisions are rare for clear-sky conditions like these; a challenge would require instrument malfunction or overlooked microclimate outlier, both improbable given multi-station corroboration and historical verification precedents.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 9 Apr '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
$513,006End Date
Apr 9, 2026Market Opened
Apr 5, 2026, 12:10 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Met Office observations from key London stations, including Heathrow and central urban sites, confirm the highest temperature on April 9, 2026, peaked at 22°C during mid-afternoon amid a mild high-pressure ridge following an unusually warm spell earlier in the week. This provisional data, based on standardized SYNOP measurements, aligns with trader consensus implying 100% probability for 22°C, reflecting the aggregated skin-in-the-game assessment of real-time recordings across the city's official network. While final quality-controlled data from the Met Office is pending release within days, revisions are rare for clear-sky conditions like these; a challenge would require instrument malfunction or overlooked microclimate outlier, both improbable given multi-station corroboration and historical verification precedents.
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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