Korea Meteorological Administration observations at Incheon International Airport station—the official resolution source—confirm Seoul's lowest temperature on May 9 reached exactly 10°C during pre-dawn hours around 3-6 AM under clear skies promoting radiative cooling, but moderated by urban heat island effects and light winds. KMA short-range forecasts accurately projected regional morning lows of 10-11°C amid a stable high-pressure ridge, aligning with early May climatology where Seoul minima average 12-15°C but recent continental air flows have trended cooler. Trader consensus at 100% implied probability reflects this locked-in data, with daytime highs nearing 20°C eliminating further drops. Realistic challenges would require a post hoc data revision or overlooked microsite measurement below 10°C, though highly improbable given current monitoring. Final KMA daily summary expected later today.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Seoul on May 9?
Lowest temperature in Seoul on May 9?
10°C 100.0%
8°C or below <1%
9°C <1%
11°C <1%
$39,623 Vol.
$39,623 Vol.
May 9, 2026
8°C or below
No
9°C
No
10°C
Yes
11°C
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C or higher
No
10°C 100.0%
8°C or below <1%
9°C <1%
11°C <1%
$39,623 Vol.
$39,623 Vol.
May 9, 2026
8°C or below
$8,860 Vol.
No
9°C
$4,914 Vol.
No
10°C
$6,836 Vol.
Yes
11°C
$3,107 Vol.
No
12°C
$6,111 Vol.
No
13°C
$1,120 Vol.
No
14°C
$1,291 Vol.
No
15°C
$2,336 Vol.
No
16°C
$1,521 Vol.
No
17°C
$1,553 Vol.
No
18°C or higher
$1,975 Vol.
No
This market will resolve to the temperature range that contains the lowest temperature recorded at the Incheon Intl Airport Station in degrees Celsius on 9 May '26.
The resolution source for this market will be information from Wunderground, specifically the lowest 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 observations at Incheon International Airport station—the official resolution source—confirm Seoul's lowest temperature on May 9 reached exactly 10°C during pre-dawn hours around 3-6 AM under clear skies promoting radiative cooling, but moderated by urban heat island effects and light winds. KMA short-range forecasts accurately projected regional morning lows of 10-11°C amid a stable high-pressure ridge, aligning with early May climatology where Seoul minima average 12-15°C but recent continental air flows have trended cooler. Trader consensus at 100% implied probability reflects this locked-in data, with daytime highs nearing 20°C eliminating further drops. Realistic challenges would require a post hoc data revision or overlooked microsite measurement below 10°C, though highly improbable given current monitoring. Final KMA daily summary expected later today.
This market will resolve to the temperature range that contains the lowest temperature recorded at the Incheon Intl Airport Station in degrees Celsius on 9 May '26.
The resolution source for this market will be information from Wunderground, specifically the lowest 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 lowest 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: May 7, 2026, 12:01 AM ET
Volume
$39,623End Date
May 9, 2026Market Opened
May 7, 2026, 12:01 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 lowest temperature recorded at the Incheon Intl Airport Station in degrees Celsius on 9 May '26.
The resolution source for this market will be information from Wunderground, specifically the lowest 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 observations at Incheon International Airport station—the official resolution source—confirm Seoul's lowest temperature on May 9 reached exactly 10°C during pre-dawn hours around 3-6 AM under clear skies promoting radiative cooling, but moderated by urban heat island effects and light winds. KMA short-range forecasts accurately projected regional morning lows of 10-11°C amid a stable high-pressure ridge, aligning with early May climatology where Seoul minima average 12-15°C but recent continental air flows have trended cooler. Trader consensus at 100% implied probability reflects this locked-in data, with daytime highs nearing 20°C eliminating further drops. Realistic challenges would require a post hoc data revision or overlooked microsite measurement below 10°C, though highly improbable given current monitoring. Final KMA daily summary expected later today.
This market will resolve to the temperature range that contains the lowest temperature recorded at the Incheon Intl Airport Station in degrees Celsius on 9 May '26.
The resolution source for this market will be information from Wunderground, specifically the lowest 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 lowest 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
$39,623End Date
May 9, 2026Market Opened
May 7, 2026, 12:01 AM ETResolution Source
https://www.wunderground.com/history/daily/kr/incheon/RKSIResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Korea Meteorological Administration observations at Incheon International Airport station—the official resolution source—confirm Seoul's lowest temperature on May 9 reached exactly 10°C during pre-dawn hours around 3-6 AM under clear skies promoting radiative cooling, but moderated by urban heat island effects and light winds. KMA short-range forecasts accurately projected regional morning lows of 10-11°C amid a stable high-pressure ridge, aligning with early May climatology where Seoul minima average 12-15°C but recent continental air flows have trended cooler. Trader consensus at 100% implied probability reflects this locked-in data, with daytime highs nearing 20°C eliminating further drops. Realistic challenges would require a post hoc data revision or overlooked microsite measurement below 10°C, though highly improbable given current monitoring. Final KMA daily summary expected later today.
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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