# WindBorne raises $37M Series B as its balloon fleet passes 600 aloft

Canonical page: https://technooptimist.io/stories/windborne-raises-37m-series-b-as-its-balloon-fleet-passes-600-aloft-86255ada
Date: 5 Aug 2026
About: [WindBorne Systems](https://technooptimist.io/companies/windborne-systems.md) · [WeatherMesh](https://technooptimist.io/ai/weathermesh.md)
Original source: https://windbornesystems.com/blog/windborne-systems-raises-37-million-to-build-the-worlds-weather-intelligence-infrastructure

WindBorne raised an oversubscribed $37 million Series B co-led by Khosla Ventures and Galvanize, taking total funding past $62 million. Revenue and the balloon fleet both tripled in a year.

## Key facts

- More than 600 balloons now fly at the same time.
- Other investors: Translink Capital, Biprogy and Lux Capital.
- Money goes to more balloons, WeatherMesh development and more computing.
- Trading firms were early buyers; government demand for its data and forecasts is growing.

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