California-Based WindBorne Systems Scores $37M in Series B Funding
Aug 6, 2026 | By Devin Jacobs
SUMMARY
- WindBorne Systems raised $37 million in Series B funding.
- WindBorne Systems develops AI-powered weather forecasting technology.
- The funding will expand its global weather network and AI platform.
WindBorne Systems, a Palo Alto, CA-based provider of a weather intelligence platform, has raised $37 million in a Series B funding round led by Khosla Ventures and Galvanize, bringing the total amount to more than $62 million.
The round also saw participation from TransLink Capital, Lux Capital, and existing investors.
The company plans to use the fresh capital to expand its global sensing network and further develop its AI-powered WeatherMesh forecasting platform.
Funding Snapshot
| Metric | Details |
|---|---|
| Fundraise Amount | $37 million |
| Total Funding | More than $62 million |
| Valuation | Undisclosed |
| Company | WindBorne Systems |
| Sector | Weather Intelligence / AI / ClimateTech |
| Headquarters | Palo Alto, California, US |
| Series | Series B |
| Lead Investors | Khosla Ventures, Galvanize |
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About WindBorne Systems
Founded in 2019 by John Dean, Andrey Sushko, Kai Marshland, WindBorne Systems combines autonomous sensing balloons with proprietary AI models to build a more detailed and continuously updated picture of Earths atmosphere.
Read More:California-Based Convex Scores $57M in Series B Funding
The company's balloon network collects atmospheric information from areas where data has historically been limited. This information is then used to power AI-based weather forecasting models and provide earlier insights into hurricanes, atmospheric rivers and other severe weather events.
Core offerings include:
- Autonomous long-duration sensing balloons
- Global atmospheric data collection
- WeatherMesh AI forecasting platform
- Weather intelligence for government and commercial customers
Core Technologies / Products / Services
| Capability/Product | Application/Use Case |
|---|---|
| Sensing Balloons | Collect atmospheric data across the globe |
| WeatherMesh | AI-powered global weather forecasting |
| Atmospheric Intelligence | Improves understanding of weather systems |
| Weather Data | Supports government and commercial forecasting applications |
Leadership Comments
"We're building something that has never existed before: a planetary nervous system that continuously observes Earth's atmosphere and transforms those observations into dramatically better forecasts," said John Dean, Co-Founder and CEO, WindBorne Systems.
"We've believed since our earliest investment that better atmospheric data could transform weather forecasting," said Sven Strohband, Partner and Managing Director, Khosla Ventures. "As AI models become increasingly capable, the quality of the underlying observations becomes even more important.
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