Trader consensus on Polymarket assigns a 100% implied probability to 22°C as Busan's highest temperature on April 20, 2026, backed by Korea Meteorological Administration (KMA) observations showing an early-day peak of 22°C amid hazy sunshine, followed by cooling to 17–18°C under mostly cloudy skies and southwest winds. This positioning reflects a sharp weather shift from mid-April's unseasonal heatwave (up to 27°C) to a cold wave advisory, with yellow dust influx suppressing further warming by reducing solar insolation and increasing cloud cover. Model consensus from KMA short-term forecasts aligns on no additional intensification, as incoming northerly flows cap highs. Realistic challenges would require improbable clear skies and downslope winds for a late-afternoon spike above 23°C, unlikely given current trajectories and evening descent. KMA updates expected overnight will finalize 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 Busan on April 20?
22°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$73,074 Vol.
$73,074 Vol.
15°C or below
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C
No
22°C
Yes
23°C
No
24°C
No
25°C or higher
No
22°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$73,074 Vol.
$73,074 Vol.
15°C or below
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C
No
22°C
Yes
23°C
No
24°C
No
25°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 by the Forecast for the Gimhae Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/kr/busan/RKPK.
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, 12:15 AM ET
Resolution Source
https://www.wunderground.com/history/daily/kr/busan/RKPKResolver
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 by the Forecast for the Gimhae Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/kr/busan/RKPK.
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.
Resolution Source
https://www.wunderground.com/history/daily/kr/busan/RKPKResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Trader consensus on Polymarket assigns a 100% implied probability to 22°C as Busan's highest temperature on April 20, 2026, backed by Korea Meteorological Administration (KMA) observations showing an early-day peak of 22°C amid hazy sunshine, followed by cooling to 17–18°C under mostly cloudy skies and southwest winds. This positioning reflects a sharp weather shift from mid-April's unseasonal heatwave (up to 27°C) to a cold wave advisory, with yellow dust influx suppressing further warming by reducing solar insolation and increasing cloud cover. Model consensus from KMA short-term forecasts aligns on no additional intensification, as incoming northerly flows cap highs. Realistic challenges would require improbable clear skies and downslope winds for a late-afternoon spike above 23°C, unlikely given current trajectories and evening descent. KMA updates expected overnight will finalize observations.
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