Current forecasts from multiple models indicate a high near 28°C on September 18 in the Seoul-Incheon area under partly cloudy skies with persistent easterly winds of 5–10 m/s and negligible precipitation risk. Trader sentiment clusters on 27–28°C because ensemble runs show modest spread in peak heating tied to variable afternoon cloud cover and exact timing of maximum insolation, with some guidance favoring 27°C under slightly thicker cloud decks. This aligns with early-autumn climatology where seasonal highs average 25–26°C; stable high pressure dominates without significant synoptic features to drive larger deviations. Updated model runs and official Korea Meteorological Administration briefings over the next 48 hours will likely refine the precise maximum.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Seoul (Incheon) on September 18?
Highest temperature in Seoul (Incheon) on September 18?
28°C 37%
27°C 25%
29°C 22%
30°C 11%
NEW
NEW
Sep 18, 2026
24°C or below
<1%
25°C
4%
26°C
10%
27°C
27%
28°C
26%
29°C
15%
30°C
11%
31°C
2%
32°C
2%
33°C
1%
34°C or higher
<1%
28°C 37%
27°C 25%
29°C 22%
30°C 11%
NEW
NEW
Sep 18, 2026
24°C or below
$0 Vol.
<1%
25°C
$4 Vol.
4%
26°C
$17 Vol.
10%
27°C
$8 Vol.
27%
28°C
$3 Vol.
26%
29°C
$6 Vol.
15%
30°C
$20 Vol.
11%
31°C
$0 Vol.
2%
32°C
$0 Vol.
2%
33°C
$0 Vol.
1%
34°C or higher
$0 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Incheon Intl Airport Station in degrees Celsius on 18 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=rksi
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.Current forecasts from multiple models indicate a high near 28°C on September 18 in the Seoul-Incheon area under partly cloudy skies with persistent easterly winds of 5–10 m/s and negligible precipitation risk. Trader sentiment clusters on 27–28°C because ensemble runs show modest spread in peak heating tied to variable afternoon cloud cover and exact timing of maximum insolation, with some guidance favoring 27°C under slightly thicker cloud decks. This aligns with early-autumn climatology where seasonal highs average 25–26°C; stable high pressure dominates without significant synoptic features to drive larger deviations. Updated model runs and official Korea Meteorological Administration briefings over the next 48 hours will likely refine the precise maximum.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Incheon Intl Airport Station in degrees Celsius on 18 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=rksi
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=rksi
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 16, 2026, 12:56 AM ET
Volume
$58End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=rksiResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Incheon Intl Airport Station in degrees Celsius on 18 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=rksi
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.Current forecasts from multiple models indicate a high near 28°C on September 18 in the Seoul-Incheon area under partly cloudy skies with persistent easterly winds of 5–10 m/s and negligible precipitation risk. Trader sentiment clusters on 27–28°C because ensemble runs show modest spread in peak heating tied to variable afternoon cloud cover and exact timing of maximum insolation, with some guidance favoring 27°C under slightly thicker cloud decks. This aligns with early-autumn climatology where seasonal highs average 25–26°C; stable high pressure dominates without significant synoptic features to drive larger deviations. Updated model runs and official Korea Meteorological Administration briefings over the next 48 hours will likely refine the precise maximum.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Incheon Intl Airport Station in degrees Celsius on 18 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=rksi
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=rksi
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
$58End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=rksiResolver
0x69c47De9D...Current forecasts from multiple models indicate a high near 28°C on September 18 in the Seoul-Incheon area under partly cloudy skies with persistent easterly winds of 5–10 m/s and negligible precipitation risk. Trader sentiment clusters on 27–28°C because ensemble runs show modest spread in peak heating tied to variable afternoon cloud cover and exact timing of maximum insolation, with some guidance favoring 27°C under slightly thicker cloud decks. This aligns with early-autumn climatology where seasonal highs average 25–26°C; stable high pressure dominates without significant synoptic features to drive larger deviations. Updated model runs and official Korea Meteorological Administration briefings over the next 48 hours will likely refine the precise maximum.
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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