Trader consensus on Polymarket reflects tight uncertainty between 19°C (44%) and 20°C (48.5%) for Tokyo's highest temperature at Haneda Airport on April 3, driven by divergent latest model forecasts: Japan Meteorological Agency's MSM at 17.8°C, GFS at 18.5°C, and ECMWF at 18.2°C, amid mostly sunny skies promoting diurnal heating. Current observations show morning temperatures around 8–10°C rising under light northerly winds (10–15 km/h), with potential for afternoon peaks hinging on boundary layer stability and minimal cloud interference. JMA's seasonal outlook signals above-normal April temperatures, aligning with historical early-April averages near 19°C; updated hourly guidance from JMA and global ensembles expected this afternoon could tip the balance before daily resolution.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Tokyo on April 3?
Highest temperature in Tokyo on April 3?
20°C 47%
19°C 45%
21°C or higher 6.5%
16°C <1%
$114,892 Vol.
$114,892 Vol.
16°C
<1%
17°C
<1%
18°C
<1%
19°C
45%
20°C
46%
21°C or higher
7%
20°C 47%
19°C 45%
21°C or higher 6.5%
16°C <1%
$114,892 Vol.
$114,892 Vol.
16°C
<1%
17°C
<1%
18°C
<1%
19°C
45%
20°C
46%
21°C or higher
7%
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, 3:32 PM ET
Resolution Source
https://www.wunderground.com/history/daily/jp/tokyo/RJTTResolver
0x69c47De9D...Outcome proposed: No
Dispute window
Final
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
Dispute window
Final
Trader consensus on Polymarket reflects tight uncertainty between 19°C (44%) and 20°C (48.5%) for Tokyo's highest temperature at Haneda Airport on April 3, driven by divergent latest model forecasts: Japan Meteorological Agency's MSM at 17.8°C, GFS at 18.5°C, and ECMWF at 18.2°C, amid mostly sunny skies promoting diurnal heating. Current observations show morning temperatures around 8–10°C rising under light northerly winds (10–15 km/h), with potential for afternoon peaks hinging on boundary layer stability and minimal cloud interference. JMA's seasonal outlook signals above-normal April temperatures, aligning with historical early-April averages near 19°C; updated hourly guidance from JMA and global ensembles expected this afternoon could tip the balance before daily resolution.
Experimental AI-generated summary referencing Polymarket data · Updated
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