**Japan Meteorological Agency surface observations at Tokyo's Haneda Airport station—the official metric for this market—confirm the highest temperature reached exactly 20°C on April 26, 2026, driving trader consensus to 100% implied probability on that outcome.** This aligns with short-range forecast models from JMA and global ensembles predicting daytime highs near 20°C amid partly cloudy skies, moderate winds, and typical springtime atmospheric stability over the Kanto region, where April averages hover around 19–21°C. Historical data shows Haneda rarely sees late-day spikes beyond model guidance on such days. Realistic challenges include a rare post-preliminary data revision by JMA or an unverified outlier reading, though final validation is expected imminently with negligible risk of upward adjustment.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Tokyo on April 26?
Highest temperature in Tokyo on April 26?
20°C 100.0%
13°C or below <1%
14°C <1%
15°C <1%
$119,828 Vol.
$119,828 Vol.
Apr 26, 2026
13°C or below
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
Yes
21°C
No
22°C
No
23°C or higher
No
20°C 100.0%
13°C or below <1%
14°C <1%
15°C <1%
$119,828 Vol.
$119,828 Vol.
Apr 26, 2026
13°C or below
$6,682 Vol.
No
14°C
$2,053 Vol.
No
15°C
$3,845 Vol.
No
16°C
$3,087 Vol.
No
17°C
$3,558 Vol.
No
18°C
$6,447 Vol.
No
19°C
$12,503 Vol.
No
20°C
$34,434 Vol.
Yes
21°C
$23,002 Vol.
No
22°C
$16,283 Vol.
No
23°C or higher
$7,934 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the Tokyo Haneda Airport Station in degrees Celsius on 26 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 Tokyo Haneda Airport Station once information is finalized, 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 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.**Japan Meteorological Agency surface observations at Tokyo's Haneda Airport station—the official metric for this market—confirm the highest temperature reached exactly 20°C on April 26, 2026, driving trader consensus to 100% implied probability on that outcome.** This aligns with short-range forecast models from JMA and global ensembles predicting daytime highs near 20°C amid partly cloudy skies, moderate winds, and typical springtime atmospheric stability over the Kanto region, where April averages hover around 19–21°C. Historical data shows Haneda rarely sees late-day spikes beyond model guidance on such days. Realistic challenges include a rare post-preliminary data revision by JMA or an unverified outlier reading, though final validation is expected imminently with negligible risk of upward adjustment.
This market will resolve to the temperature range that contains the highest temperature recorded at the Tokyo Haneda Airport Station in degrees Celsius on 26 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 Tokyo Haneda Airport Station once information is finalized, 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 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 Tokyo Haneda Airport Station once information is finalized, 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 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 24, 2026, 12:07 AM ET
Volume
$119,828End Date
Apr 26, 2026Market Opened
Apr 24, 2026, 12:07 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 highest temperature recorded at the Tokyo Haneda Airport Station in degrees Celsius on 26 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 Tokyo Haneda Airport Station once information is finalized, 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 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.**Japan Meteorological Agency surface observations at Tokyo's Haneda Airport station—the official metric for this market—confirm the highest temperature reached exactly 20°C on April 26, 2026, driving trader consensus to 100% implied probability on that outcome.** This aligns with short-range forecast models from JMA and global ensembles predicting daytime highs near 20°C amid partly cloudy skies, moderate winds, and typical springtime atmospheric stability over the Kanto region, where April averages hover around 19–21°C. Historical data shows Haneda rarely sees late-day spikes beyond model guidance on such days. Realistic challenges include a rare post-preliminary data revision by JMA or an unverified outlier reading, though final validation is expected imminently with negligible risk of upward adjustment.
This market will resolve to the temperature range that contains the highest temperature recorded at the Tokyo Haneda Airport Station in degrees Celsius on 26 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 Tokyo Haneda Airport Station once information is finalized, 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 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 Tokyo Haneda Airport Station once information is finalized, 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 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
$119,828End Date
Apr 26, 2026Market Opened
Apr 24, 2026, 12:07 AM ETResolution Source
https://www.wunderground.com/history/daily/jp/tokyo/RJTTResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
**Japan Meteorological Agency surface observations at Tokyo's Haneda Airport station—the official metric for this market—confirm the highest temperature reached exactly 20°C on April 26, 2026, driving trader consensus to 100% implied probability on that outcome.** This aligns with short-range forecast models from JMA and global ensembles predicting daytime highs near 20°C amid partly cloudy skies, moderate winds, and typical springtime atmospheric stability over the Kanto region, where April averages hover around 19–21°C. Historical data shows Haneda rarely sees late-day spikes beyond model guidance on such days. Realistic challenges include a rare post-preliminary data revision by JMA or an unverified outlier reading, though final validation is expected imminently with negligible risk of upward adjustment.
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