Official Japan Meteorological Agency measurements confirm a daily maximum of 28°C at Tokyo’s primary observation station on May 30, driving the market’s 100% implied probability for that outcome. Forecasts from the preceding day indicated partly cloudy conditions with a high near 28°C, aligning closely with climatological averages for late May and recent model runs showing limited warming potential. This consensus reflects the precision of JMA’s standardized surface observations, which resolve markets once verified data are released. Only a rare post-verification correction or station-specific anomaly would alter the result, scenarios considered negligible given the agency’s rigorous quality controls.
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 30?
Highest temperature in Tokyo on May 30?
28°C 100.0%
19°C or below <1%
20°C <1%
21°C <1%
$62,954 Vol.
$62,954 Vol.
May 30, 2026
19°C or below
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
No
28°C
Yes
29°C or higher
No
28°C 100.0%
19°C or below <1%
20°C <1%
21°C <1%
$62,954 Vol.
$62,954 Vol.
May 30, 2026
19°C or below
$570 Vol.
No
20°C
$1,068 Vol.
No
21°C
$525 Vol.
No
22°C
$191 Vol.
No
23°C
$834 Vol.
No
24°C
$4,703 Vol.
No
25°C
$2,818 Vol.
No
26°C
$10,721 Vol.
No
27°C
$12,368 Vol.
No
28°C
$14,499 Vol.
Yes
29°C or higher
$14,657 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 30 May '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 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.Official Japan Meteorological Agency measurements confirm a daily maximum of 28°C at Tokyo’s primary observation station on May 30, driving the market’s 100% implied probability for that outcome. Forecasts from the preceding day indicated partly cloudy conditions with a high near 28°C, aligning closely with climatological averages for late May and recent model runs showing limited warming potential. This consensus reflects the precision of JMA’s standardized surface observations, which resolve markets once verified data are released. Only a rare post-verification correction or station-specific anomaly would alter the result, scenarios considered negligible given the agency’s rigorous quality controls.
This market will resolve to the temperature range that contains the highest temperature recorded at the Tokyo Haneda Airport Station in degrees Celsius on 30 May '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 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 highest 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: May 28, 2026, 12:05 AM ET
Volume
$62,954End Date
May 30, 2026Market Opened
May 28, 2026, 12:05 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 30 May '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 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.Official Japan Meteorological Agency measurements confirm a daily maximum of 28°C at Tokyo’s primary observation station on May 30, driving the market’s 100% implied probability for that outcome. Forecasts from the preceding day indicated partly cloudy conditions with a high near 28°C, aligning closely with climatological averages for late May and recent model runs showing limited warming potential. This consensus reflects the precision of JMA’s standardized surface observations, which resolve markets once verified data are released. Only a rare post-verification correction or station-specific anomaly would alter the result, scenarios considered negligible given the agency’s rigorous quality controls.
This market will resolve to the temperature range that contains the highest temperature recorded at the Tokyo Haneda Airport Station in degrees Celsius on 30 May '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 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 highest 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
$62,954End Date
May 30, 2026Market Opened
May 28, 2026, 12:05 AM ETResolution Source
https://www.wunderground.com/history/daily/jp/tokyo/RJTTResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official Japan Meteorological Agency measurements confirm a daily maximum of 28°C at Tokyo’s primary observation station on May 30, driving the market’s 100% implied probability for that outcome. Forecasts from the preceding day indicated partly cloudy conditions with a high near 28°C, aligning closely with climatological averages for late May and recent model runs showing limited warming potential. This consensus reflects the precision of JMA’s standardized surface observations, which resolve markets once verified data are released. Only a rare post-verification correction or station-specific anomaly would alter the result, scenarios considered negligible given the agency’s rigorous quality controls.
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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