Recent ensemble forecasts from major models indicate persistently warm overnight conditions across the Kanto region, supporting trader consensus around a 27–28°C minimum on July 21. High pressure and limited cloud cover have maintained elevated dew points and reduced radiative cooling, while regional sea-surface temperatures remain above seasonal norms. These factors differentiate the closely matched 27°C and 28°C outcomes, as small shifts in wind direction or boundary-layer moisture could alter the low by 1°C. Updated runs from the Global Forecast System and European Centre for Medium-Range Weather Forecasts, expected within the next 24 hours, will likely refine resolution criteria for the daily minimum recorded at the Tokyo station.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Tokyo on July 21?
Lowest temperature in Tokyo on July 21?
27°C 100.0%
22°C or below <1%
23°C <1%
24°C <1%
$13,175 Vol.
$13,175 Vol.
Jul 21, 2026
22°C or below
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
Yes
28°C
No
29°C
No
30°C
No
31°C
No
32°C or higher
No
27°C 100.0%
22°C or below <1%
23°C <1%
24°C <1%
$13,175 Vol.
$13,175 Vol.
Jul 21, 2026
22°C or below
$423 Vol.
No
23°C
$508 Vol.
No
24°C
$896 Vol.
No
25°C
$883 Vol.
No
26°C
$1,532 Vol.
No
27°C
$2,646 Vol.
Yes
28°C
$3,505 Vol.
No
29°C
$1,103 Vol.
No
30°C
$776 Vol.
No
31°C
$495 Vol.
No
32°C or higher
$408 Vol.
No
This market will resolve to the temperature range that contains the lowest temperature recorded at the Tokyo Haneda Airport Station in degrees Celsius on 21 Jul '26.
The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day for the Tokyo Haneda Airport Station, available here: https://www.wunderground.com/history/daily/jp/tokyo/RJTT.
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.Recent ensemble forecasts from major models indicate persistently warm overnight conditions across the Kanto region, supporting trader consensus around a 27–28°C minimum on July 21. High pressure and limited cloud cover have maintained elevated dew points and reduced radiative cooling, while regional sea-surface temperatures remain above seasonal norms. These factors differentiate the closely matched 27°C and 28°C outcomes, as small shifts in wind direction or boundary-layer moisture could alter the low by 1°C. Updated runs from the Global Forecast System and European Centre for Medium-Range Weather Forecasts, expected within the next 24 hours, will likely refine resolution criteria for the daily minimum recorded at the Tokyo station.
This market will resolve to the temperature range that contains the lowest temperature recorded at the Tokyo Haneda Airport Station in degrees Celsius on 21 Jul '26.
The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day for the Tokyo Haneda Airport Station, available here: https://www.wunderground.com/history/daily/jp/tokyo/RJTT.
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 lowest temperature recorded for all times on this day for the Tokyo Haneda Airport Station, available here: https://www.wunderground.com/history/daily/jp/tokyo/RJTT.
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 19, 2026, 12:30 AM ET
Volume
$13,175End Date
Jul 21, 2026Market Opened
Jul 19, 2026, 12:30 AM ETResolution Source
https://www.wunderground.com/history/daily/jp/tokyo/RJTTResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the lowest temperature recorded at the Tokyo Haneda Airport Station in degrees Celsius on 21 Jul '26.
The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day for the Tokyo Haneda Airport Station, available here: https://www.wunderground.com/history/daily/jp/tokyo/RJTT.
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.Recent ensemble forecasts from major models indicate persistently warm overnight conditions across the Kanto region, supporting trader consensus around a 27–28°C minimum on July 21. High pressure and limited cloud cover have maintained elevated dew points and reduced radiative cooling, while regional sea-surface temperatures remain above seasonal norms. These factors differentiate the closely matched 27°C and 28°C outcomes, as small shifts in wind direction or boundary-layer moisture could alter the low by 1°C. Updated runs from the Global Forecast System and European Centre for Medium-Range Weather Forecasts, expected within the next 24 hours, will likely refine resolution criteria for the daily minimum recorded at the Tokyo station.
This market will resolve to the temperature range that contains the lowest temperature recorded at the Tokyo Haneda Airport Station in degrees Celsius on 21 Jul '26.
The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day for the Tokyo Haneda Airport Station, available here: https://www.wunderground.com/history/daily/jp/tokyo/RJTT.
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 lowest temperature recorded for all times on this day for the Tokyo Haneda Airport Station, available here: https://www.wunderground.com/history/daily/jp/tokyo/RJTT.
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
$13,175End Date
Jul 21, 2026Market Opened
Jul 19, 2026, 12:30 AM ETResolution Source
https://www.wunderground.com/history/daily/jp/tokyo/RJTTResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Recent ensemble forecasts from major models indicate persistently warm overnight conditions across the Kanto region, supporting trader consensus around a 27–28°C minimum on July 21. High pressure and limited cloud cover have maintained elevated dew points and reduced radiative cooling, while regional sea-surface temperatures remain above seasonal norms. These factors differentiate the closely matched 27°C and 28°C outcomes, as small shifts in wind direction or boundary-layer moisture could alter the low by 1°C. Updated runs from the Global Forecast System and European Centre for Medium-Range Weather Forecasts, expected within the next 24 hours, will likely refine resolution criteria for the daily minimum recorded at the Tokyo station.
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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