Japan Meteorological Agency (JMA) forecasts and ensemble models have solidified trader consensus around a 24°C maximum temperature at Tokyo's Haneda Airport station today, May 11, with persistent cloud cover and a trough pattern limiting solar heating to match the daily normal of 23.3°C. Observations throughout the day, including social reports of 17–24°C ranges under mostly cloudy skies, show temperatures peaking near this threshold without exceeding it, driving the market-implied 100% probability for 24°C. This positioning reflects low atmospheric instability and subdued insolation, aligning with early May climatology. Realistic challenges include unexpected afternoon clearing for brief radiative warming to 25°C, though model consensus gives this less than 2% odds; final JMA observations post-midnight will confirm resolution.
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 May 11?
24°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$157,797 Vol.
$157,797 Vol.
15°C or below
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C
Yes
25°C or higher
No
24°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$157,797 Vol.
$157,797 Vol.
15°C or below
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C
Yes
25°C or higher
No
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: May 9, 2026, 3:37 AM ET
Resolution Source
https://www.wunderground.com/history/daily/jp/tokyo/RJTTResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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.
Resolution Source
https://www.wunderground.com/history/daily/jp/tokyo/RJTTResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Japan Meteorological Agency (JMA) forecasts and ensemble models have solidified trader consensus around a 24°C maximum temperature at Tokyo's Haneda Airport station today, May 11, with persistent cloud cover and a trough pattern limiting solar heating to match the daily normal of 23.3°C. Observations throughout the day, including social reports of 17–24°C ranges under mostly cloudy skies, show temperatures peaking near this threshold without exceeding it, driving the market-implied 100% probability for 24°C. This positioning reflects low atmospheric instability and subdued insolation, aligning with early May climatology. Realistic challenges include unexpected afternoon clearing for brief radiative warming to 25°C, though model consensus gives this less than 2% odds; final JMA observations post-midnight will confirm resolution.
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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