**Official Japan Meteorological Agency observations recorded a daily maximum of 31.3°C in Tokyo on September 9, 2026, driving the near-certain market consensus around the 31°C outcome.** Persistent cloud cover, scattered showers, and moderate southwesterly winds limited further warming after the afternoon peak, consistent with regional model guidance and recent days' trends of 30–32°C highs amid humid, unsettled conditions. Traders assign negligible probability to other bins because verified station data already captured the day's extreme. Only a late revision in the official record, use of an alternate measurement site, or unexpected post-observation spike could realistically alter resolution.
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 September 9?
Highest temperature in Tokyo on September 9?
31°C 100.0%
25°C or below <1%
26°C <1%
27°C <1%
$65,719 Vol.
$65,719 Vol.
Sep 9, 2026
25°C or below
<1%
26°C
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°C
<1%
31°C
100%
32°C
<1%
33°C
<1%
34°C
<1%
35°C or higher
<1%
31°C 100.0%
25°C or below <1%
26°C <1%
27°C <1%
$65,719 Vol.
$65,719 Vol.
Sep 9, 2026
25°C or below
$5,573 Vol.
<1%
26°C
$3,234 Vol.
<1%
27°C
$2,274 Vol.
<1%
28°C
$4,599 Vol.
<1%
29°C
$6,573 Vol.
<1%
30°C
$7,507 Vol.
<1%
31°C
$13,787 Vol.
100%
32°C
$10,055 Vol.
<1%
33°C
$7,302 Vol.
<1%
34°C
$2,695 Vol.
<1%
35°C or higher
$2,119 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Tokyo Haneda Airport Station in degrees Celsius on 9 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=rjtt
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.**Official Japan Meteorological Agency observations recorded a daily maximum of 31.3°C in Tokyo on September 9, 2026, driving the near-certain market consensus around the 31°C outcome.** Persistent cloud cover, scattered showers, and moderate southwesterly winds limited further warming after the afternoon peak, consistent with regional model guidance and recent days' trends of 30–32°C highs amid humid, unsettled conditions. Traders assign negligible probability to other bins because verified station data already captured the day's extreme. Only a late revision in the official record, use of an alternate measurement site, or unexpected post-observation spike could realistically alter resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Tokyo Haneda Airport Station in degrees Celsius on 9 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=rjtt
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=rjtt
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Sep 7, 2026, 12:56 AM ET
Volume
$65,719End Date
Sep 9, 2026Market Opened
Sep 7, 2026, 12:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=rjttResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Tokyo Haneda Airport Station in degrees Celsius on 9 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=rjtt
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.**Official Japan Meteorological Agency observations recorded a daily maximum of 31.3°C in Tokyo on September 9, 2026, driving the near-certain market consensus around the 31°C outcome.** Persistent cloud cover, scattered showers, and moderate southwesterly winds limited further warming after the afternoon peak, consistent with regional model guidance and recent days' trends of 30–32°C highs amid humid, unsettled conditions. Traders assign negligible probability to other bins because verified station data already captured the day's extreme. Only a late revision in the official record, use of an alternate measurement site, or unexpected post-observation spike could realistically alter resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Tokyo Haneda Airport Station in degrees Celsius on 9 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=rjtt
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=rjtt
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Volume
$65,719End Date
Sep 9, 2026Market Opened
Sep 7, 2026, 12:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=rjttResolver
0x69c47De9D...**Official Japan Meteorological Agency observations recorded a daily maximum of 31.3°C in Tokyo on September 9, 2026, driving the near-certain market consensus around the 31°C outcome.** Persistent cloud cover, scattered showers, and moderate southwesterly winds limited further warming after the afternoon peak, consistent with regional model guidance and recent days' trends of 30–32°C highs amid humid, unsettled conditions. Traders assign negligible probability to other bins because verified station data already captured the day's extreme. Only a late revision in the official record, use of an alternate measurement site, or unexpected post-observation spike could realistically alter resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions