Trader consensus assigns a 100% implied probability to a lowest temperature of 12°C in Tokyo on April 30, driven by Japan Meteorological Agency (JMA) observations at the official Haneda Airport Station, which recorded the early morning minimum at 12°C amid persistent cloud cover and mild southerly flows limiting radiative cooling. High-pressure influence over the Kanto region, as noted in recent JMA updates, supported stable overnight conditions with temperatures holding above typical April lows of 10–11°C historically. Real-time METAR reports from Haneda corroborated this, showing no sub-12°C readings by midday. Realistic challenges would require an erroneous data point or late-night revision in JMA's final daily summary, though automated monitoring and model consensus make this exceedingly unlikely as the resolution window closes.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Tokyo on April 30?
Lowest temperature in Tokyo on April 30?
12°C 100.0%
9°C or below <1%
10°C <1%
11°C <1%
$48,718 Vol.
$48,718 Vol.
9°C or below
No
10°C
No
11°C
No
12°C
Yes
13°C
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C or higher
No
12°C 100.0%
9°C or below <1%
10°C <1%
11°C <1%
$48,718 Vol.
$48,718 Vol.
9°C or below
No
10°C
No
11°C
No
12°C
Yes
13°C
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C or higher
No
The resolution source for this market will be information from Wunderground, specifically the lowest 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 28, 2026, 1:50 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 lowest 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 assigns a 100% implied probability to a lowest temperature of 12°C in Tokyo on April 30, driven by Japan Meteorological Agency (JMA) observations at the official Haneda Airport Station, which recorded the early morning minimum at 12°C amid persistent cloud cover and mild southerly flows limiting radiative cooling. High-pressure influence over the Kanto region, as noted in recent JMA updates, supported stable overnight conditions with temperatures holding above typical April lows of 10–11°C historically. Real-time METAR reports from Haneda corroborated this, showing no sub-12°C readings by midday. Realistic challenges would require an erroneous data point or late-night revision in JMA's final daily summary, though automated monitoring and model consensus make this exceedingly unlikely as the resolution window closes.
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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