One trader betting on Paris weather made $34,000 by manipulating an automated weather sensor system at Paris Charles de Gaulle Airport with hair dryers. The French meteorological administration, Météo France, filed a complaint with the air transport gendarmerie in Roissy for tampering. The incident occurred on two days, when the sensor recorded an unusual spike in temperature. Meteorologist Paul Marquis suggested that a physical intervention with a heating device placed near the sensor was the most plausible explanation. Despite this, the weather market on Polymarket, which uses weather sensor data at the airport, is still open to similar manipulation.