An official investigation has been triggered by unusual temperature fluctuations at Charles de Gaulle Airport (CDG) in Paris, where a trader on Polymarket reportedly profited around $37,000 from bets linked to these anomalies. The French weather agency, Météo-France, raised alarms after temperatures spiked unexpectedly on April 6 and April 15, reaching 21°C and nearly 22°C, respectively, which were significantly higher than the day's average of 18°C. Data analysis firms identified a specific trader who made aggressive bets just before the temperature spikes, suggesting possible insider knowledge. In response, Météo-France has filed a police complaint, suspecting sensor tampering or cyber-intrusion, as no other nearby weather stations recorded similar anomalies. This incident highlights vulnerabilities in data-dependent betting platforms, raising questions about the integrity of the information used to settle contracts on platforms like Polymarket.