Recent ensemble forecasts from models such as the ECMWF and GFS indicate Seoul’s June 28 maximum temperature will likely fall in the 27–29 °C range, driving the tight clustering of market-implied odds around those outcomes. Variability stems from uncertainty in afternoon cloud cover, boundary-layer moisture, and the precise timing of any weak frontal passage, all of which can alter peak readings by 1–2 °C. Historical climatology for late June shows a mean daily maximum near 28 °C, providing a baseline that traders weigh against the latest model runs. Official guidance from the Korea Meteorological Administration and updated high-resolution simulations expected over the next 48 hours will be the key catalysts likely to shift probabilities before the market resolves.
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 June 28?
27°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$181,341 Vol.
$181,341 Vol.
21°C or below
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
Yes
28°C
No
29°C
No
30°C
No
31°C or higher
No
27°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$181,341 Vol.
$181,341 Vol.
21°C or below
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
Yes
28°C
No
29°C
No
30°C
No
31°C or higher
No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Incheon Intl Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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: Jun 26, 2026, 12:02 AM ET
Resolution Source
https://www.wunderground.com/history/daily/kr/incheon/RKSIResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Incheon Intl Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.wunderground.com/history/daily/kr/incheon/RKSIResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Recent ensemble forecasts from models such as the ECMWF and GFS indicate Seoul’s June 28 maximum temperature will likely fall in the 27–29 °C range, driving the tight clustering of market-implied odds around those outcomes. Variability stems from uncertainty in afternoon cloud cover, boundary-layer moisture, and the precise timing of any weak frontal passage, all of which can alter peak readings by 1–2 °C. Historical climatology for late June shows a mean daily maximum near 28 °C, providing a baseline that traders weigh against the latest model runs. Official guidance from the Korea Meteorological Administration and updated high-resolution simulations expected over the next 48 hours will be the key catalysts likely to shift probabilities before the market resolves.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions