Understand the Sky
Before It Strikes
LegmaMiteo is an open-source network of modular weather stations built to detect severe convective events — supercells, hailstorms, and tornadoes — that national models miss entirely.
Built for Events
That Models Miss
Global models like ECMWF operate at 9km resolution with 1-hour time steps. Supercells develop in 20 minutes over 5km. That gap is exactly what LegmaMiteo fills.
Lightning Detection
AS3935 Franklin sensor detects lightning strikes up to 40km away, tracking distance and energy — the first signal of an approaching supercell.
Learn more →Pressure Monitoring
A drop of 3–5 hPa in under two hours is a reliable precursor to severe convective development. BMP580 tracks this in real time with 0.06 hPa resolution.
See live data →Wind Shear Analysis
Rapid changes in wind direction and speed at ground level are indirect signatures of the atmospheric instability that drives hail-producing thunderstorms.
Air Quality
MOD-AIR measures PM1/PM2.5/PM10, CO₂ and VOC in real time — critical for post-event analysis after dust storms, wildfires or industrial accidents.
Instant Alerts
Telegram notifications fire the moment thresholds are crossed — pressure drop, lightning within 10km, PM2.5 above WHO limits — with zero delay.
Open Data API
Every measurement is publicly accessible in real time via REST API. No key required for reads. CC BY-NC 4.0 — free for research and education.
API docs →Deploy Your Own
Station
Everything is open source — hardware schematics, firmware, and server stack. Under €200 to build, solar powered, designed for unattended deployment anywhere.
View on GitHub