A persistent heat dome and southerly flow advecting warm Atlantic air across northern France drove Paris daytime maxima toward 33°C on May 29, consistent with Météo-France guidance and ensemble runs from ECMWF and GFS models that converged on that peak under mostly clear skies and limited cloud cover. This setup produced the market’s near-certain 33°C outcome, well above the long-term May average high near 19–20°C yet below the all-time May 29 record of 34.8°C set in 1944. Official station data at Paris-Le Bourget, the resolution source, aligned with these forecasts amid the first May heatwave alert for the region. A modest westward shift in the ridge axis or increased marine-layer moisture could have capped readings at 32°C, while stronger insolation or delayed frontal passage might have pushed the maximum to 34°C.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Paris on May 29?
33°C 100.0%
27°C or below <1%
28°C <1%
29°C <1%
$94,628 Vol.
$94,628 Vol.
27°C or below
No
28°C
No
29°C
No
30°C
No
31°C
No
32°C
No
33°C
Yes
34°C
No
35°C
No
36°C
No
37°C or higher
No
33°C 100.0%
27°C or below <1%
28°C <1%
29°C <1%
$94,628 Vol.
$94,628 Vol.
27°C or below
No
28°C
No
29°C
No
30°C
No
31°C
No
32°C
No
33°C
Yes
34°C
No
35°C
No
36°C
No
37°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 Paris-Le Bourget Airport Station, available here: https://www.wunderground.com/history/daily/fr/bonneuil-en-france/LFPB.
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: May 27, 2026, 12:05 AM ET
Resolver
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 Paris-Le Bourget Airport Station, available here: https://www.wunderground.com/history/daily/fr/bonneuil-en-france/LFPB.
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.
Resolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
A persistent heat dome and southerly flow advecting warm Atlantic air across northern France drove Paris daytime maxima toward 33°C on May 29, consistent with Météo-France guidance and ensemble runs from ECMWF and GFS models that converged on that peak under mostly clear skies and limited cloud cover. This setup produced the market’s near-certain 33°C outcome, well above the long-term May average high near 19–20°C yet below the all-time May 29 record of 34.8°C set in 1944. Official station data at Paris-Le Bourget, the resolution source, aligned with these forecasts amid the first May heatwave alert for the region. A modest westward shift in the ridge axis or increased marine-layer moisture could have capped readings at 32°C, while stronger insolation or delayed frontal passage might have pushed the maximum to 34°C.
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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