**Official Japan Meteorological Agency (JMA) observations at Tokyo's Haneda Airport station—the market's resolution source—confirm the highest temperature on April 7, 2026, reached 19°C, anchoring trader consensus at 100% implied probability for this outcome.** Hourly AMeDAS data show an early-day peak under mild southerly winds, followed by overcast skies that suppressed further warming into the mid-teens Celsius, aligning with early April climatological norms (historical average highs near 19°C during spring transition). Model forecasts from JMA had projected 18–21°C ranges amid neutral ENSO influences, with no anomalous heat drivers. Scenarios challenging this include rare post-day data revisions from equipment calibration or urban heat microsite discrepancies, though JMA finalizes daily maxima reliably by midnight; traders await any end-of-day updates.**
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 7?
Highest temperature in Tokyo on April 7?
19°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$209,371 Vol.
$209,371 Vol.
14°C or below
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
Yes
20°C
No
21°C
No
22°C
No
23°C
No
24°C or higher
No
19°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$209,371 Vol.
$209,371 Vol.
14°C or below
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
Yes
20°C
No
21°C
No
22°C
No
23°C
No
24°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: Apr 3, 2026, 6:03 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
**Official Japan Meteorological Agency (JMA) observations at Tokyo's Haneda Airport station—the market's resolution source—confirm the highest temperature on April 7, 2026, reached 19°C, anchoring trader consensus at 100% implied probability for this outcome.** Hourly AMeDAS data show an early-day peak under mild southerly winds, followed by overcast skies that suppressed further warming into the mid-teens Celsius, aligning with early April climatological norms (historical average highs near 19°C during spring transition). Model forecasts from JMA had projected 18–21°C ranges amid neutral ENSO influences, with no anomalous heat drivers. Scenarios challenging this include rare post-day data revisions from equipment calibration or urban heat microsite discrepancies, though JMA finalizes daily maxima reliably by midnight; traders await any end-of-day updates.**
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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