Current forecasts from the Korea Meteorological Administration and global models indicate mostly sunny conditions over Incheon on September 21 under a stable high-pressure ridge, with light northeasterly winds and low humidity supporting daytime warming to a maximum near 28–30°C. Official guidance points to an Incheon high around 29°C and Seoul near 30°C, consistent with late-September climatology but slightly above average due to clear skies and minimal cloud cover. Model runs show limited spread, with most solutions converging on this range while noting typical diurnal peaks in the early afternoon. Trader emphasis on the 27–28°C outcomes reflects this consensus alongside minor uncertainty from potential microscale variations or slight forecast adjustments before 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 Seoul (Incheon) on September 21?
28°C 45%
27°C 37%
26°C 12%
29°C 10%
23°C or below
1%
24°C
1%
25°C
6%
26°C
12%
27°C
37%
28°C
45%
29°C
10%
30°C
4%
31°C
3%
32°C
4%
33°C or higher
4%
28°C 45%
27°C 37%
26°C 12%
29°C 10%
23°C or below
1%
24°C
1%
25°C
6%
26°C
12%
27°C
37%
28°C
45%
29°C
10%
30°C
4%
31°C
3%
32°C
4%
33°C or higher
4%
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 19, 2026, 12:56 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=rksiResolver
0x69c47De9D...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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=rksiResolver
0x69c47De9D...Current forecasts from the Korea Meteorological Administration and global models indicate mostly sunny conditions over Incheon on September 21 under a stable high-pressure ridge, with light northeasterly winds and low humidity supporting daytime warming to a maximum near 28–30°C. Official guidance points to an Incheon high around 29°C and Seoul near 30°C, consistent with late-September climatology but slightly above average due to clear skies and minimal cloud cover. Model runs show limited spread, with most solutions converging on this range while noting typical diurnal peaks in the early afternoon. Trader emphasis on the 27–28°C outcomes reflects this consensus alongside minor uncertainty from potential microscale variations or slight forecast adjustments before resolution.
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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