Official Met Office observations from key London stations, including Heathrow and Kew Gardens, recorded a maximum temperature of 16°C on April 28, driving the 100% market-implied probability for this outcome as traders await final verification for resolution. This aligns with pre-event forecast model consensus from the Met Office and BBC Weather, which projected daytime peaks of 16–17°C amid morning drizzle, partial cloud cover, and fresh north-easterly winds of 14–15 mph that capped solar heating despite brief sunny spells around 3–5 p.m. Late-April climatological averages of 15–16°C highs provided baseline support following the early-month heatwave exceeding 26°C. Realistic challenges include rare provisional data revisions from quality checks or overlooked urban heat island readings, though verified agency data rarely shifts post-publication.
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 28?
Highest temperature in London on April 28?
16°C 100.0%
9°C or below <1%
10°C <1%
11°C <1%
$165,685 Vol.
$165,685 Vol.
Apr 28, 2026
9°C or below
No
10°C
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
Yes
17°C
No
18°C
No
19°C or higher
No
16°C 100.0%
9°C or below <1%
10°C <1%
11°C <1%
$165,685 Vol.
$165,685 Vol.
Apr 28, 2026
9°C or below
$9,444 Vol.
No
10°C
$4,319 Vol.
No
11°C
$4,144 Vol.
No
12°C
$5,238 Vol.
No
13°C
$12,780 Vol.
No
14°C
$19,049 Vol.
No
15°C
$22,868 Vol.
No
16°C
$27,082 Vol.
Yes
17°C
$27,509 Vol.
No
18°C
$18,063 Vol.
No
19°C or higher
$15,188 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 28 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.Official Met Office observations from key London stations, including Heathrow and Kew Gardens, recorded a maximum temperature of 16°C on April 28, driving the 100% market-implied probability for this outcome as traders await final verification for resolution. This aligns with pre-event forecast model consensus from the Met Office and BBC Weather, which projected daytime peaks of 16–17°C amid morning drizzle, partial cloud cover, and fresh north-easterly winds of 14–15 mph that capped solar heating despite brief sunny spells around 3–5 p.m. Late-April climatological averages of 15–16°C highs provided baseline support following the early-month heatwave exceeding 26°C. Realistic challenges include rare provisional data revisions from quality checks or overlooked urban heat island readings, though verified agency data rarely shifts post-publication.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 28 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 26, 2026, 12:43 AM ET
Volume
$165,685End Date
Apr 28, 2026Market Opened
Apr 26, 2026, 12:43 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 28 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.Official Met Office observations from key London stations, including Heathrow and Kew Gardens, recorded a maximum temperature of 16°C on April 28, driving the 100% market-implied probability for this outcome as traders await final verification for resolution. This aligns with pre-event forecast model consensus from the Met Office and BBC Weather, which projected daytime peaks of 16–17°C amid morning drizzle, partial cloud cover, and fresh north-easterly winds of 14–15 mph that capped solar heating despite brief sunny spells around 3–5 p.m. Late-April climatological averages of 15–16°C highs provided baseline support following the early-month heatwave exceeding 26°C. Realistic challenges include rare provisional data revisions from quality checks or overlooked urban heat island readings, though verified agency data rarely shifts post-publication.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 28 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
$165,685End Date
Apr 28, 2026Market Opened
Apr 26, 2026, 12:43 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 from key London stations, including Heathrow and Kew Gardens, recorded a maximum temperature of 16°C on April 28, driving the 100% market-implied probability for this outcome as traders await final verification for resolution. This aligns with pre-event forecast model consensus from the Met Office and BBC Weather, which projected daytime peaks of 16–17°C amid morning drizzle, partial cloud cover, and fresh north-easterly winds of 14–15 mph that capped solar heating despite brief sunny spells around 3–5 p.m. Late-April climatological averages of 15–16°C highs provided baseline support following the early-month heatwave exceeding 26°C. Realistic challenges include rare provisional data revisions from quality checks or overlooked urban heat island readings, though verified agency data rarely shifts post-publication.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions