Traders' near-unanimous consensus on a 11°C high in Seoul on March 21 stems from the Korea Meteorological Administration's (KMA) latest forecast, which projects exactly that amid a stable cold air mass dominating the Korean Peninsula. Ensemble models from ECMWF and GFS corroborate this, showing highs clustered at 10-12°C with low variance, consistent with early spring climatology where Seoul's March average maximum is around 11°C and diurnal ranges favor moderation under partly cloudy skies. Historical data from similar setups reinforces reliability, as KMA daytime highs resolve accurately within 1°C over 80% of cases this season. Realistic challenges include an unforeseen southerly wind shift or upper-level warming, potentially pushing temps to 13°C+, though current 500mb charts indicate minimal risk.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Seoul on March 21?
Highest temperature in Seoul on March 21?
11°C 100.0%
12°C <1%
13°C <1%
14°C or higher <1%
$373,331 Vol.
$373,331 Vol.
11°C
100%
12°C
<1%
13°C
<1%
14°C or higher
<1%
11°C 100.0%
12°C <1%
13°C <1%
14°C or higher <1%
$373,331 Vol.
$373,331 Vol.
11°C
100%
12°C
<1%
13°C
<1%
14°C or higher
<1%
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: Mar 17, 2026, 6:02 AM ET
Resolution Source
https://www.wunderground.com/history/daily/kr/incheon/RKSIResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Resolution Source
https://www.wunderground.com/history/daily/kr/incheon/RKSIResolver
0x69c47De9D...Traders' near-unanimous consensus on a 11°C high in Seoul on March 21 stems from the Korea Meteorological Administration's (KMA) latest forecast, which projects exactly that amid a stable cold air mass dominating the Korean Peninsula. Ensemble models from ECMWF and GFS corroborate this, showing highs clustered at 10-12°C with low variance, consistent with early spring climatology where Seoul's March average maximum is around 11°C and diurnal ranges favor moderation under partly cloudy skies. Historical data from similar setups reinforces reliability, as KMA daytime highs resolve accurately within 1°C over 80% of cases this season. Realistic challenges include an unforeseen southerly wind shift or upper-level warming, potentially pushing temps to 13°C+, though current 500mb charts indicate minimal risk.
Experimental AI-generated summary referencing Polymarket data · Updated
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