John Dean is Co-Founder and CEO of WindBorne, a company building next-generation weather balloons and an AI-powered forecasting layer to improve global weather prediction. WindBorne’s balloons can stay aloft for weeks — collecting critical atmospheric data across oceans and remote regions where traditional weather infrastructure doesn’t reach.

In this episode of Inevitable, Dean explains why weather forecasting has remained largely unchanged for decades and why better data—not just better models—is the key to improving weather predictions. Our conversation explores how WindBorne’s balloon constellation captures atmospheric data at a global scale, how AI models like WeatherMesh translate that data into more accurate forecasts, and why extreme weather and infrastructure gaps are creating urgency for better systems. Dean also shares how the company makes money across data, forecasting, and insights—and his long-term vision of building “a planetary-scale nervous system.”

In this episode, we cover:

(0:00) An overview of WindBorne
(2:57) How weather forecasting actually works
(4:36) Why traditional weather balloons haven’t changed in decades
(12:50) What WindBorne is: long-duration balloons, global data collection and a weather intelligence platform
(14:14) What makes WindBorne different: better sensors, batteries, and communications
(17:35) Atlas: WindBorne’s global balloon constellation
(18:17) How better weather data improves hurricane predictions
(20:35) Airspace safety and the realities of flying balloons at scale
(24:35) WindBorne’s business model: data, forecasts, and insights
(29:30) Why weather data matters for energy markets and grid reliability
(32:09) The long-term vision: Building a “planetary-scale nervous system”
(35:41) Why AI + physical infrastructure is a “net good” for society

Enjoyed this episode? Please leave us a review! Share feedback or suggest future topics and guests at info@mcj.vc.

Connect with MCJ:

*Editing and post-production work for this episode was provided by The Podcast Consultant

Improving Weather Forecasting with WindBorne

Inevitable