Recent official forecasts from the Korea Meteorological Administration and ensemble models indicate a daytime high of 28°C for Incheon on September 19 under partly cloudy skies with light northeasterly winds and minimal precipitation risk. This consensus, consistent across multiple sources projecting 27–29°C maxima, underpins the market's strong 65.5% implied probability for 28°C as the peak reading. Typical early-autumn conditions with moderate humidity and no significant frontal systems or heat advection support limited upside to 29°C or higher, while overnight lows near 18–20°C reduce downside risk below 27°C. Final resolution will depend on the precise maximum from calibrated station observations.
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 19?
28°C 65%
27°C 18%
29°C 16%
26°C 4%
$21,991 Vol.
$21,991 Vol.
23°C or below
<1%
24°C
<1%
25°C
1%
26°C
4%
27°C
18%
28°C
65%
29°C
16%
30°C
2%
31°C
1%
32°C
<1%
33°C or higher
<1%
28°C 65%
27°C 18%
29°C 16%
26°C 4%
$21,991 Vol.
$21,991 Vol.
23°C or below
<1%
24°C
<1%
25°C
1%
26°C
4%
27°C
18%
28°C
65%
29°C
16%
30°C
2%
31°C
1%
32°C
<1%
33°C or higher
<1%
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 17, 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...Recent official forecasts from the Korea Meteorological Administration and ensemble models indicate a daytime high of 28°C for Incheon on September 19 under partly cloudy skies with light northeasterly winds and minimal precipitation risk. This consensus, consistent across multiple sources projecting 27–29°C maxima, underpins the market's strong 65.5% implied probability for 28°C as the peak reading. Typical early-autumn conditions with moderate humidity and no significant frontal systems or heat advection support limited upside to 29°C or higher, while overnight lows near 18–20°C reduce downside risk below 27°C. Final resolution will depend on the precise maximum from calibrated station observations.
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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