Official observations from Poland's Institute of Meteorology and Water Management (IMGW) and Warsaw Chopin Airport (EPWA) METAR reports confirm the city's highest temperature on May 5 peaked at 28°C during midday hours, driving Polymarket's 100% implied probability for this outcome amid clear skies and a dominant high-pressure ridge suppressing cloud cover and allowing solar heating to maximize surface temperatures. Hourly data showed steady climbs from morning lows near 12°C, topping out at 28°C before diurnal cooling set in, aligning with the latest ECMWF and GFS ensemble forecasts that converged on 27-29°C highs over the past 48 hours. This exceeds Warsaw's early May climatological average of 18-20°C, reflecting mild advection from southern air masses. Realistic challenges would require anomalous late-day urban heat island effects or discrepant readings from secondary stations prompting IMGW revisions, though multi-site consensus renders this improbable; final daily validation expected by evening.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Warsaw on May 5?
Highest temperature in Warsaw on May 5?
28°C 100.0%
20°C or below <1%
21°C <1%
22°C <1%
$71,666 Vol.
$71,666 Vol.
20°C or below
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
No
28°C
Yes
29°C
No
30°C or higher
No
28°C 100.0%
20°C or below <1%
21°C <1%
22°C <1%
$71,666 Vol.
$71,666 Vol.
20°C or below
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
No
28°C
Yes
29°C
No
30°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 Warsaw Chopin Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/pl/warsaw/EPWA.
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 3, 2026, 12:22 AM ET
Resolution Source
https://www.wunderground.com/history/daily/pl/warsaw/EPWAResolver
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 Warsaw Chopin Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/pl/warsaw/EPWA.
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/pl/warsaw/EPWAResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official observations from Poland's Institute of Meteorology and Water Management (IMGW) and Warsaw Chopin Airport (EPWA) METAR reports confirm the city's highest temperature on May 5 peaked at 28°C during midday hours, driving Polymarket's 100% implied probability for this outcome amid clear skies and a dominant high-pressure ridge suppressing cloud cover and allowing solar heating to maximize surface temperatures. Hourly data showed steady climbs from morning lows near 12°C, topping out at 28°C before diurnal cooling set in, aligning with the latest ECMWF and GFS ensemble forecasts that converged on 27-29°C highs over the past 48 hours. This exceeds Warsaw's early May climatological average of 18-20°C, reflecting mild advection from southern air masses. Realistic challenges would require anomalous late-day urban heat island effects or discrepant readings from secondary stations prompting IMGW revisions, though multi-site consensus renders this improbable; final daily validation expected by evening.
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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