WindBorne Systems Raises $37 Million to Expand AI Weather Forecasting Into Private Markets
WindBorne Systems’ August 2026 $37M Series B (co-led by Khosla Ventures and Galvanize) scales its balloon network—20 launch sites with ~600 balloons aloft—and expands its AI forecasting beyond government users. CEO John Dean says balloon data beats satellite per data point, helping the U.S. National Weather Service, Air Force, and Navy, with new work on ocean-dropping buoy sensors.