# Windborne Systems

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/windborne-systems

- Industry: Software
- Headquarters: Redwood City, US
- Website: www.windbornesystems.com
- Total disclosed funding: $60M
- Latest round: Series B (Jul 31, 2026)
- Investors on record: 11

## About

Windborne Systems Inc., based in the US, specializes in advanced weather forecasting solutions by utilizing proprietary technology that integrates atmospheric data from weather balloons with AI models for improved accuracy. Founded in 2019 in Palo Alto, US, Windborne Systems Inc. is dedicated to delivering innovative weather forecasting solutions. The company was co-founded by Andrey Sushko, John Dean, and Kai Marshland, with John Dean serving as CEO. In August 2026, Windborne Systems Inc. raised USD 37 million in series B funding co-led by Galvanize Climate Solutions and Khosla Ventures, with participation from Translink Capital and Lux Capital. The company has completed three deals to date, with its most recent deal occurring on May 15, 2024.WindBorne Systems specializes in advanced weather forecasting solutions through its proprietary technology that integrates atmospheric data collected from long-duration balloons with sophisticated artificial intelligence models. The company's core offering, Atlas, represents the world's largest balloon constellation designed to gather in-situ weather data. This system operates by launching hundreds of autonomous weather balloons monthly from various global launch sites, allowing for comprehensive atmospheric coverage that addresses existing data gaps. WindBorne serves a diverse clientele, including U.S. and international governments, private sector companies, and renowned philanthropic organizations, all of which benefit from enhanced weather predictions that aid in decision-making across multiple sectors. The geographical markets served include North America, Europe, and regions across Asia, reflecting the global applicability of their forecasting technology. WindBorne Systems generates revenue primarily through B2B partnerships, subscriptions, and contract agreements with various stakeholders, including government entities and private organizations. Clients typically engage in annual contracts that provide them with access to real-time weather data and forecasting services essential for sectors such as agriculture, emergency management, and transportation. The pricing structure is aligned with the level of service provided, with customized plans tailored to meet the specific needs of partners, ensuring comprehensive data coverage and forecasting accuracy. Flagship offerings like the Atlas balloon constellation contribute significantly to the company’s revenue through these structured partnerships, facilitating continuous data flow and updates that are crucial for effective weather prediction. The company plan to use the August 2026 funding to expand into private markets, increase computing capacity, and enhance its balloon network communications. Additionally, Windborne aims to expand its market reach into new geographical regions, particularly focusing on Asia and Europe, by the end of 2025. This strategic growth plan highlights the company’s commitment to broadening its service offerings and enhancing its technological capabilities.

## Funding rounds

- Series B, Jul 31, 2026, $37M — Khosla Ventures, Translink Capital, Lux Capital, Galvanize Climate Solutions
- Series A, May 15, 2024, $15M — Khosla Ventures, Susa Ventures, Pear VC, Harvest Venture Partners, Ubiquity Ventures, Footwork, Convective Capital, Jetstream
- Seed, May 12, 2023, $8.4M — Khosla Ventures, Susa Ventures, Pear VC, Harvest Venture Partners, Ubiquity Ventures, Footwork, Convective Capital, Jetstream

## Investors

- Khosla Ventures (https://capitalatlas.ai/funds/khosla-ventures) — Seed, Series A, Series B
- Susa Ventures (https://capitalatlas.ai/funds/susa-ventures) — Seed, Series A
- Pear VC (https://capitalatlas.ai/funds/pear-vc) — Seed, Series A
- Harvest Venture Partners (https://capitalatlas.ai/funds/harvest-venture-partners) — Seed, Series A
- Ubiquity Ventures (https://capitalatlas.ai/funds/ubiquity-ventures) — Seed, Series A
- Footwork (https://capitalatlas.ai/funds/footwork) — Seed, Series A
- Convective Capital (https://capitalatlas.ai/funds/convective-capital) — Seed, Series A
- Jetstream (https://capitalatlas.ai/funds/jetstream) — Seed, Series A
- Translink Capital (https://capitalatlas.ai/funds/translink-capital) — Series B
- Lux Capital (https://capitalatlas.ai/funds/lux-capital) — Series B
- Galvanize Climate Solutions (https://capitalatlas.ai/funds/galvanize-climate-solutions) — Series B