Company
Windborne
We've raised $37M to build the world's weather intelligence infrastructure.
Also known as WindBorne Systems Inc.
- Status
- Operatingas of 2026-09-17
- Business model
- B2B
- Headquarters
- Redwood Shores, California, United States
- Customers
- U.S. and international governments, to the private sector, to world-renowned philanthropic organizations
- Legal name
- WindBorne Systems Inc.
- windbornesystems.com (opens in a new tab)
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Record updated 28 September 2026
About
Atmospheric data is the biggest missing piece to improving modern forecasts. We fuse data from our long-duration balloons with state-of-the-art AI models to produce the most accurate weather forecasts.
Funding snapshot
- Total raised
- $37MSum of rounds, as of 2026-09-17Source (opens in a new tab)
- Latest round
- Undisclosed, $37M2026-08-05
Funding rounds
- Round, 2026
- $37M2026-08-05, Company stated, 8 investors
- Round, 2024
- $15M2024-05-15, SEC form D sold, 4 investors
- Round, 2023
- $9.9M2023-05-12, SEC form D sold, 13 investors
Products
- Hardware
- Atlas
- Web
- Atlas
- Other
- WeatherMesh
- Web
- WeatherMesh
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