Polymarket Faces Integrity Questions as Paris Weather Bets Deliver $37,000 in Trader Gains

Two accounts came under scrutiny after Paris temperature markets reportedly paid them about $37,000 from contracts tied to official weather readings. The markets used the highest temperature recorded at Charles de Gaulle Airport on April 6 and April 15. On both days, short spikes settled the outcomes and triggered questions about possible interference with the data. French media, analysts, and meteorologists all focused on readings that rose sharply and then fell soon after.