Trader consensus on Polymarket assigns a 100% implied probability to a highest temperature of 20°C in Tokyo on March 30, driven by Japan Meteorological Agency (JMA) observations confirming this maximum at key stations amid mild spring conditions, with sunny skies and light winds peaking in the afternoon before evening cooldowns. Current atmospheric patterns, including high-pressure influence from recent forecasts showing daytime highs near 18–22°C, align with historical March variability where averages hover around 13°C but warm spells occur under stable weather. Realistic challenges would require a late-day data revision from peripheral stations or an overlooked microclimate spike exceeding 20°C, though JMA final tallies typically lock in by evening, minimizing such risks. Upcoming JMA daily summary expected shortly after midnight.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Tokyo on March 30?
Highest temperature in Tokyo on March 30?
20°C 100.0%
12°C or below <1%
13°C <1%
14°C <1%
$165,691 Vol.
$165,691 Vol.
12°C or below
No
13°C
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 or higher
No
20°C 100.0%
12°C or below <1%
13°C <1%
14°C <1%
$165,691 Vol.
$165,691 Vol.
12°C or below
No
13°C
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 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: Mar 29, 2026, 2:23 PM 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
Trader consensus on Polymarket assigns a 100% implied probability to a highest temperature of 20°C in Tokyo on March 30, driven by Japan Meteorological Agency (JMA) observations confirming this maximum at key stations amid mild spring conditions, with sunny skies and light winds peaking in the afternoon before evening cooldowns. Current atmospheric patterns, including high-pressure influence from recent forecasts showing daytime highs near 18–22°C, align with historical March variability where averages hover around 13°C but warm spells occur under stable weather. Realistic challenges would require a late-day data revision from peripheral stations or an overlooked microclimate spike exceeding 20°C, though JMA final tallies typically lock in by evening, minimizing such risks. Upcoming JMA daily summary expected shortly after midnight.
Experimental AI-generated summary referencing Polymarket data · Updated
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