Kalshi is strengthening verification for its weather prediction markets through a partnership with The Weather Company, which will provide data quality control and authoritative weather observations for contract settlement. The agreement follows suspected tampering involving data from a weather station at Paris Charles de Gaulle Airport, highlighting prediction markets’ dependence on reliable official measurement sources. Kalshi’s climate and weather trading volume has reached a projected $1.1 billion annualized pace, with the company describing growth as 500% year to date in its latest update; an earlier account characterized the increase as 500% year over year. Farmers are using the contracts to hedge potential losses from heat waves, while small businesses view them as more accessible than traditional derivatives and insurance. The Weather Company will also feature Kalshi’s real-time probability data in select experiences on The Weather Channel app and weather.com.