Aerya — read the sky before you fly

Fly smarter.
Read the sky.

A paragliding forecast that knows the difference between a sun-baked south face and a shaded valley. Terrain-aware thermals, real upper-air soundings, and an honest "no thermals at this hour" when there aren't any.

AROME · ICON-D2 · Open-Meteo

Planning a flight shouldn't need three paid subscriptions.

Most pilots stitch together multiple paid apps and a free sounding tool while squinting at five tabs. Each app shows you one slice — none of them tell you "this ridge bakes at 13:00, the valley sinks at 16:00, launch at 11:30."

🌤️ Generic grid modelsOpen-Meteo and AROME give you a 2.5 km cell — useless for picking the right spur.

💸 Paywalls on public dataPublic weather model output is free at the source. Aerya keeps the basics free and only charges for the work on top.

🤷 No "why is it empty?"When the model has no data, most apps just show a blank screen. You can't tell if it's broken or calm.

Three things, done seriously.

No clever AI buzzword soup. Just careful physics, careful data, and a careful eye for honesty.

Thermal strength forecast

Hourly thermal strength across Europe at 1.3 km resolution, driven by AROME. Colour-coded so you can read at a glance whether the day is on or off.

Multi-source NWP

velivole's AROME (1.3 km) is primary. ICON-D2 covers the German alps. Open-Meteo is the global fallback. If one falls over, the others carry the flight.

Honest empty states

If the air is calm or the model is sleeping, we say so — not a blank map. A fallback badge appears when we're showing Open-Meteo instead of AROME.

Built by a paragliding pilot.

The forecast data underneath Aerya — AROME, ICON-D2, Open-Meteo, SRTM, ESA WorldCover — is all public, paid for by your taxes. The map is free and built for pilots who want honest forecasts.

Terrain-aware thermals, convergence zones, and real soundings

PWA — installs to your home screen, works offline-ish

Open about its fallback states — you always know the data source

Anonymous flight feedback helps train the next-gen thermal model — opt-in, never sold

Three views of the same sky.

Wind field, convergence and thermal strength — each driven by high-resolution NWP and blended with 90 m terrain. Tap a layer to switch. Real screenshots from the app.

Aerya wind field overlay — flow streamlines funnelling through the Swiss Alps and Jura, Today 11:00

Aerya convergence overlay over Switzerland — warm zones mark converging airmasses, Today 15:00

Aerya thermal strength overlay over the Pyrenees — red cores along the spine near Andorra, Today 14:00

90 m

DEM resolution

1.3 km

AROME grid

7 days

Forecast horizon

< 500 ms

Tile latency (cached)

Fly smarter.
Read the sky.