Official Japan Meteorological Agency (JMA) observations from Tokyo's primary stations, including Haneda, recorded an early morning low of 13°C around 4-6 a.m. JST on April 28, aligning with the diurnal temperature minimum typical for late April under partly cloudy skies and light southerly winds. This matches yesterday's JMA forecast update and model consensus from GFS/ECMWF runs, which projected mild overnight conditions amid a broader spring warming trend, with historical April lows averaging 10-12°C but this day skewed higher due to persistent high pressure. Trader consensus at near-certainty reflects these verified measurements, as daytime temperatures have since risen above 20°C. Realistic challenges include rare post-dawn dips from unexpected clear skies or data revisions from secondary stations, though JMA final daily summaries—expected later today—rarely alter early lows.
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 28?
Lowest temperature in Tokyo on April 28?
13°C 100.0%
10°C or below <1%
11°C <1%
12°C <1%
$38,494 Vol.
$38,494 Vol.
Apr 28, 2026
10°C or below
No
11°C
No
12°C
No
13°C
Yes
14°C
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C or higher
No
13°C 100.0%
10°C or below <1%
11°C <1%
12°C <1%
$38,494 Vol.
$38,494 Vol.
Apr 28, 2026
10°C or below
$4,445 Vol.
No
11°C
$9,896 Vol.
No
12°C
$2,030 Vol.
No
13°C
$7,362 Vol.
Yes
14°C
$784 Vol.
No
15°C
$880 Vol.
No
16°C
$1,079 Vol.
No
17°C
$1,813 Vol.
No
18°C
$1,363 Vol.
No
19°C
$1,850 Vol.
No
20°C or higher
$6,993 Vol.
No
This market will resolve to the temperature range that contains the lowest temperature recorded at the Tokyo Haneda Airport Station in degrees Celsius on 28 Apr '26.
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.Official Japan Meteorological Agency (JMA) observations from Tokyo's primary stations, including Haneda, recorded an early morning low of 13°C around 4-6 a.m. JST on April 28, aligning with the diurnal temperature minimum typical for late April under partly cloudy skies and light southerly winds. This matches yesterday's JMA forecast update and model consensus from GFS/ECMWF runs, which projected mild overnight conditions amid a broader spring warming trend, with historical April lows averaging 10-12°C but this day skewed higher due to persistent high pressure. Trader consensus at near-certainty reflects these verified measurements, as daytime temperatures have since risen above 20°C. Realistic challenges include rare post-dawn dips from unexpected clear skies or data revisions from secondary stations, though JMA final daily summaries—expected later today—rarely alter early lows.
This market will resolve to the temperature range that contains the lowest temperature recorded at the Tokyo Haneda Airport Station in degrees Celsius on 28 Apr '26.
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.
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 26, 2026, 12:02 AM ET
Volume
$38,494End Date
Apr 28, 2026Market Opened
Apr 26, 2026, 12:02 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 lowest temperature recorded at the Tokyo Haneda Airport Station in degrees Celsius on 28 Apr '26.
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.Official Japan Meteorological Agency (JMA) observations from Tokyo's primary stations, including Haneda, recorded an early morning low of 13°C around 4-6 a.m. JST on April 28, aligning with the diurnal temperature minimum typical for late April under partly cloudy skies and light southerly winds. This matches yesterday's JMA forecast update and model consensus from GFS/ECMWF runs, which projected mild overnight conditions amid a broader spring warming trend, with historical April lows averaging 10-12°C but this day skewed higher due to persistent high pressure. Trader consensus at near-certainty reflects these verified measurements, as daytime temperatures have since risen above 20°C. Realistic challenges include rare post-dawn dips from unexpected clear skies or data revisions from secondary stations, though JMA final daily summaries—expected later today—rarely alter early lows.
This market will resolve to the temperature range that contains the lowest temperature recorded at the Tokyo Haneda Airport Station in degrees Celsius on 28 Apr '26.
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.
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.
Volume
$38,494End Date
Apr 28, 2026Market Opened
Apr 26, 2026, 12:02 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 (JMA) observations from Tokyo's primary stations, including Haneda, recorded an early morning low of 13°C around 4-6 a.m. JST on April 28, aligning with the diurnal temperature minimum typical for late April under partly cloudy skies and light southerly winds. This matches yesterday's JMA forecast update and model consensus from GFS/ECMWF runs, which projected mild overnight conditions amid a broader spring warming trend, with historical April lows averaging 10-12°C but this day skewed higher due to persistent high pressure. Trader consensus at near-certainty reflects these verified measurements, as daytime temperatures have since risen above 20°C. Realistic challenges include rare post-dawn dips from unexpected clear skies or data revisions from secondary stations, though JMA final daily summaries—expected later today—rarely alter early lows.
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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