‘Hairdryer or lighter?’ French police look at claim of sensor tampering to win weather bets

Forecasting service raises alarm over data from Paris airport used to settle Polymarket wagers on temperature

French police are investigating alleging tampering with national weather forecasting service equipment after a series of unusual temperature readings coincided with suspicious winning bets made on Polymarket.

Data from a Météo-France weather station at Paris’s Charles de Gaulle airport was used to settle bets between online gamblers on what the temperature would be in Paris for March and the first weeks of April.