High pressure building over southern England is driving settled, sunny conditions for London on June 19, with southerly flow advecting warmer air and supporting peak temperatures near 30–31°C according to Met Office and ensemble guidance. This creates tight market-implied odds between those two outcomes because forecast maxima sit at the boundary where small differences in timing, cloud cover, or boundary-layer mixing can shift the daily high by 1°C. Official resolution relies on the highest reading at an approved Met Office station, where urban heat-island effects and precise wind direction add further variability. Latest model runs show limited spread around this range, with only modest upside risk if insolation exceeds expectations.
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 June 19?
Highest temperature in London on June 19?
30°C 100.0%
26°C or below <1%
27°C <1%
28°C <1%
$199,939 Vol.
$199,939 Vol.
Jun 19, 2026
26°C or below
No
27°C
No
28°C
No
29°C
No
30°C
Yes
31°C
No
32°C
No
33°C
No
34°C
No
35°C
No
36°C or higher
No
30°C 100.0%
26°C or below <1%
27°C <1%
28°C <1%
$199,939 Vol.
$199,939 Vol.
Jun 19, 2026
26°C or below
$9,724 Vol.
No
27°C
$8,531 Vol.
No
28°C
$18,484 Vol.
No
29°C
$33,328 Vol.
No
30°C
$28,282 Vol.
Yes
31°C
$31,863 Vol.
No
32°C
$26,431 Vol.
No
33°C
$19,614 Vol.
No
34°C
$6,635 Vol.
No
35°C
$13,929 Vol.
No
36°C or higher
$3,118 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 19 Jun '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.High pressure building over southern England is driving settled, sunny conditions for London on June 19, with southerly flow advecting warmer air and supporting peak temperatures near 30–31°C according to Met Office and ensemble guidance. This creates tight market-implied odds between those two outcomes because forecast maxima sit at the boundary where small differences in timing, cloud cover, or boundary-layer mixing can shift the daily high by 1°C. Official resolution relies on the highest reading at an approved Met Office station, where urban heat-island effects and precise wind direction add further variability. Latest model runs show limited spread around this range, with only modest upside risk if insolation exceeds expectations.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 19 Jun '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.
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: Jun 17, 2026, 2:50 AM ET
Volume
$199,939End Date
Jun 19, 2026Market Opened
Jun 17, 2026, 2:50 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 19 Jun '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.High pressure building over southern England is driving settled, sunny conditions for London on June 19, with southerly flow advecting warmer air and supporting peak temperatures near 30–31°C according to Met Office and ensemble guidance. This creates tight market-implied odds between those two outcomes because forecast maxima sit at the boundary where small differences in timing, cloud cover, or boundary-layer mixing can shift the daily high by 1°C. Official resolution relies on the highest reading at an approved Met Office station, where urban heat-island effects and precise wind direction add further variability. Latest model runs show limited spread around this range, with only modest upside risk if insolation exceeds expectations.
This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 19 Jun '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.
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
$199,939End Date
Jun 19, 2026Market Opened
Jun 17, 2026, 2:50 AM ETResolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
High pressure building over southern England is driving settled, sunny conditions for London on June 19, with southerly flow advecting warmer air and supporting peak temperatures near 30–31°C according to Met Office and ensemble guidance. This creates tight market-implied odds between those two outcomes because forecast maxima sit at the boundary where small differences in timing, cloud cover, or boundary-layer mixing can shift the daily high by 1°C. Official resolution relies on the highest reading at an approved Met Office station, where urban heat-island effects and precise wind direction add further variability. Latest model runs show limited spread around this range, with only modest upside risk if insolation exceeds expectations.
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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