Official Met Office observations for London on August 16 confirmed a daily maximum of 26°C, anchoring the 100% market consensus after moderation from the mid-August heatwave that peaked near 38°C. Ensemble forecasts from the Met Office and European models aligned on partly cloudy skies, light westerly flow, and limited insolation, producing tight clustering around this value with minimal diurnal range. This outcome sits well within typical late-summer variability for the region, roughly 3–4°C above the 1991–2020 August average. The only realistic challenges would involve post-event quality-control revisions at the primary observing site or an unexpected micro-climate spike at an alternate London station, both rare once provisional figures are released.
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 August 16?
Highest temperature in London on August 16?
26°C 100.0%
23°C or below <1%
24°C <1%
25°C <1%
$119,954 Vol.
$119,954 Vol.
Aug 16, 2026
23°C or below
No
24°C
No
25°C
No
26°C
Yes
27°C
No
28°C
No
29°C
No
30°C
No
31°C
No
32°C
No
33°C or higher
No
26°C 100.0%
23°C or below <1%
24°C <1%
25°C <1%
$119,954 Vol.
$119,954 Vol.
Aug 16, 2026
23°C or below
$10,330 Vol.
No
24°C
$15,989 Vol.
No
25°C
$24,262 Vol.
No
26°C
$22,432 Vol.
Yes
27°C
$28,702 Vol.
No
28°C
$10,968 Vol.
No
29°C
$4,598 Vol.
No
30°C
$1,468 Vol.
No
31°C
$301 Vol.
No
32°C
$452 Vol.
No
33°C or higher
$452 Vol.
No
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 16 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Official Met Office observations for London on August 16 confirmed a daily maximum of 26°C, anchoring the 100% market consensus after moderation from the mid-August heatwave that peaked near 38°C. Ensemble forecasts from the Met Office and European models aligned on partly cloudy skies, light westerly flow, and limited insolation, producing tight clustering around this value with minimal diurnal range. This outcome sits well within typical late-summer variability for the region, roughly 3–4°C above the 1991–2020 August average. The only realistic challenges would involve post-event quality-control revisions at the primary observing site or an unexpected micro-climate spike at an alternate London station, both rare once provisional figures are released.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 16 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 16 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Aug 14, 2026, 12:55 AM ET
Volume
$119,954End Date
Aug 16, 2026Market Opened
Aug 14, 2026, 12:55 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 based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 16 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Official Met Office observations for London on August 16 confirmed a daily maximum of 26°C, anchoring the 100% market consensus after moderation from the mid-August heatwave that peaked near 38°C. Ensemble forecasts from the Met Office and European models aligned on partly cloudy skies, light westerly flow, and limited insolation, producing tight clustering around this value with minimal diurnal range. This outcome sits well within typical late-summer variability for the region, roughly 3–4°C above the 1991–2020 August average. The only realistic challenges would involve post-event quality-control revisions at the primary observing site or an unexpected micro-climate spike at an alternate London station, both rare once provisional figures are released.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 16 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 16 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the London City Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Volume
$119,954End Date
Aug 16, 2026Market Opened
Aug 14, 2026, 12:55 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 for London on August 16 confirmed a daily maximum of 26°C, anchoring the 100% market consensus after moderation from the mid-August heatwave that peaked near 38°C. Ensemble forecasts from the Met Office and European models aligned on partly cloudy skies, light westerly flow, and limited insolation, producing tight clustering around this value with minimal diurnal range. This outcome sits well within typical late-summer variability for the region, roughly 3–4°C above the 1991–2020 August average. The only realistic challenges would involve post-event quality-control revisions at the primary observing site or an unexpected micro-climate spike at an alternate London station, both rare once provisional figures are released.
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