France Probes Weather Sensor Tampering at Largest Airport After Surge in Polymarket Bets

France's national weather forecasting office has referred a suspected case of weather sensor tampering at the country's largest airport to police, after detecting anomalous data readings that coincided with a surge in Polymarket betting activity. Météo-France flagged the irregularities at Paris Charles de Gaulle Airport, triggering an investigation into whether the data was deliberately manipulated to influence prediction market positions.

Authorities are examining whether someone accessed or interfered with the airport's weather monitoring equipment, creating false readings that could have provided inside advantage to bettors on Polymarket, a popular blockchain-based prediction platform. The timing of the unusual sensor data closely aligned with heavy wagers on weather-related contracts, raising concerns about potential market manipulation at the intersection of physical infrastructure and decentralized financial markets.

The case highlights growing scrutiny over prediction markets and their exposure to real-world data vulnerabilities. Polymarket has faced regulatory pressure in the United States, where the Commodity Futures Trading Commission previously fined the platform for operating without proper registration. French officials are now assessing whether the incident represents a broader pattern of exploiting critical data feeds for speculative gain, and whether existing regulations adequately cover the use of public infrastructure data in decentralized betting systems.