Official Met Office observations and short-range model consensus confirm London's maximum temperature reached exactly 25°C on July 31 under persistent high pressure favoring settled, dry conditions with sunny intervals and light northwesterly flow. This aligns with typical midsummer climatology for the region, where average July daily highs fall in the mid-20s Celsius, and stable atmospheric patterns limited daytime heating. Trader consensus at 100% for the 25°C outcome reflects verified station data rather than forecasts, which had initially projected 26°C. Measurement revisions from official networks or boundary adjustments in reporting thresholds represent the primary realistic scenarios that could alter resolution, though current evidence shows strong alignment with the recorded peak.
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 July 31?
25°C 100.0%
$140,446 Vol.
$140,446 Vol.
25°C
100%
25°C 100.0%
$140,446 Vol.
$140,446 Vol.
25°C
100%
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: Jul 29, 2026, 1:02 AM ET
Resolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...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.
Resolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Official Met Office observations and short-range model consensus confirm London's maximum temperature reached exactly 25°C on July 31 under persistent high pressure favoring settled, dry conditions with sunny intervals and light northwesterly flow. This aligns with typical midsummer climatology for the region, where average July daily highs fall in the mid-20s Celsius, and stable atmospheric patterns limited daytime heating. Trader consensus at 100% for the 25°C outcome reflects verified station data rather than forecasts, which had initially projected 26°C. Measurement revisions from official networks or boundary adjustments in reporting thresholds represent the primary realistic scenarios that could alter resolution, though current evidence shows strong alignment with the recorded peak.
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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