Korea Meteorological Administration (KMA) observations from Seoul's central station confirm the daily maximum temperature reached exactly 15°C on April 20, 2026, driving trader consensus to 100% implied probability for this outcome. Following April 19's mid-April record high of 29.4°C under high-pressure ridging, a fast-moving low-pressure trough ushered in widespread spring rain, cloudy skies, and cool northerly winds that capped daytime warming despite model forecasts near 16–19°C. Persistent cloud cover and light precipitation—typical suppressors of solar heating—aligned with historical April analogs for post-heat cooldowns. While KMA data carries final authority, an improbable late revision from quality checks could challenge positioning, though no such discrepancies have emerged.
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 on April 20?
Highest temperature in Seoul on April 20?
15°C 100.0%
7°C or below <1%
8°C <1%
9°C <1%
$271,792 Vol.
$271,792 Vol.
Apr 20, 2026
7°C or below
No
8°C
No
9°C
No
10°C
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C
Yes
16°C
No
17°C or higher
No
15°C 100.0%
7°C or below <1%
8°C <1%
9°C <1%
$271,792 Vol.
$271,792 Vol.
Apr 20, 2026
7°C or below
$3,635 Vol.
No
8°C
$3,773 Vol.
No
9°C
$3,049 Vol.
No
10°C
$4,546 Vol.
No
11°C
$7,629 Vol.
No
12°C
$21,206 Vol.
No
13°C
$20,343 Vol.
No
14°C
$23,754 Vol.
No
15°C
$60,499 Vol.
Yes
16°C
$41,942 Vol.
No
17°C or higher
$81,415 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the Incheon Intl Airport Station in degrees Celsius on 20 Apr '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Incheon Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/kr/incheon/RKSI.
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.Korea Meteorological Administration (KMA) observations from Seoul's central station confirm the daily maximum temperature reached exactly 15°C on April 20, 2026, driving trader consensus to 100% implied probability for this outcome. Following April 19's mid-April record high of 29.4°C under high-pressure ridging, a fast-moving low-pressure trough ushered in widespread spring rain, cloudy skies, and cool northerly winds that capped daytime warming despite model forecasts near 16–19°C. Persistent cloud cover and light precipitation—typical suppressors of solar heating—aligned with historical April analogs for post-heat cooldowns. While KMA data carries final authority, an improbable late revision from quality checks could challenge positioning, though no such discrepancies have emerged.
This market will resolve to the temperature range that contains the highest temperature recorded at the Incheon Intl Airport Station in degrees Celsius on 20 Apr '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Incheon Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/kr/incheon/RKSI.
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 highest temperature recorded for all times on this day by the Forecast for the Incheon Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/kr/incheon/RKSI.
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 18, 2026, 12:57 AM ET
Volume
$271,792End Date
Apr 20, 2026Market Opened
Apr 18, 2026, 12:57 AM ETResolution Source
https://www.wunderground.com/history/daily/kr/incheon/RKSIResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded at the Incheon Intl Airport Station in degrees Celsius on 20 Apr '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Incheon Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/kr/incheon/RKSI.
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.Korea Meteorological Administration (KMA) observations from Seoul's central station confirm the daily maximum temperature reached exactly 15°C on April 20, 2026, driving trader consensus to 100% implied probability for this outcome. Following April 19's mid-April record high of 29.4°C under high-pressure ridging, a fast-moving low-pressure trough ushered in widespread spring rain, cloudy skies, and cool northerly winds that capped daytime warming despite model forecasts near 16–19°C. Persistent cloud cover and light precipitation—typical suppressors of solar heating—aligned with historical April analogs for post-heat cooldowns. While KMA data carries final authority, an improbable late revision from quality checks could challenge positioning, though no such discrepancies have emerged.
This market will resolve to the temperature range that contains the highest temperature recorded at the Incheon Intl Airport Station in degrees Celsius on 20 Apr '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Incheon Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/kr/incheon/RKSI.
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 highest temperature recorded for all times on this day by the Forecast for the Incheon Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/kr/incheon/RKSI.
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
$271,792End Date
Apr 20, 2026Market Opened
Apr 18, 2026, 12:57 AM ETResolution Source
https://www.wunderground.com/history/daily/kr/incheon/RKSIResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Korea Meteorological Administration (KMA) observations from Seoul's central station confirm the daily maximum temperature reached exactly 15°C on April 20, 2026, driving trader consensus to 100% implied probability for this outcome. Following April 19's mid-April record high of 29.4°C under high-pressure ridging, a fast-moving low-pressure trough ushered in widespread spring rain, cloudy skies, and cool northerly winds that capped daytime warming despite model forecasts near 16–19°C. Persistent cloud cover and light precipitation—typical suppressors of solar heating—aligned with historical April analogs for post-heat cooldowns. While KMA data carries final authority, an improbable late revision from quality checks could challenge positioning, though no such discrepancies have emerged.
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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