Slovenia - Soaring Weather API
High-resolution WRF forecasts across the Slovenian soaring map. Tolmin, Lijak, Kobarid, Kobala, Vogel, Stol, Krvavec - thermal strength, cloudbase, soaring height, corridor sampling, served as JSON four times a day.
Model specifications
What you get for Slovenia coverage
All fields available now at 4 km.
Thermal Strength
wstar_ms - thermal updraft velocity in m/s
Soaring Height
hglider_agl_m + hglider_msl_m - usable thermalling height
Cloudbase
cloudbase_agl_ft + cloudbase_msl_m, Cu potential, OD risk
Wind
surface_wind_* plus wind_925_*, wind_850_*, wind_800_*, wind_700_*
Trigger Temperature
thermal_trigger_temp_c - surface temperature at which thermals fire
Day Rating
day_rating - poor, marginal, fair, good, excellent
Corridor Sampling
Weather along a route - time-aware available
Sounding Profile
Full vertical profile - temp, dewpoint, wind
Query Slovenia forecasts in seconds
Pass region, resolution, and any covered coordinate - the API resolves the nearest model grid point and returns the forecast.
Request
curl "https://api.convek.dev/v1/site?region=si&resolution=4km&lat=46.18&lon=13.73&time=13:00" \-H "Authorization: Bearer cvk_live_your_key_here"
Response
{"valid_date": "2026-05-09","valid_time": "11:00","rasp_model": "si/4km","site": {"wstar_ms": 2.1,"hglider_agl_m": 1222,"cloudbase_agl_ft": 4503,"cloudbase_msl_m": 2143,"surface_wind_speed_ms": 2.9,"surface_wind_dir_deg": 232,"day_rating": "good"}}
About soaring weather in Slovenia
Tolmin and the Soča Valley pull thousands of pilot-days a summer from across Europe and well beyond. The convergence between the Julian Alps and the Adriatic is what makes the place fly the way it does, and it is exactly the kind of mesoscale feature that needs a regional model to forecast - a 13 km global cell averages it away.
Convek serves the same fields for Slovenia as for every other country. The internal score that produces poor / marginal / fair / good / excellent is the same scoring function across all of them, so 'good over Tolmin' and 'good over the Long Mynd' mean the same thing meteorologically. That consistency is the whole point of having a single API rather than five regional sites with five different colour scales.
The corridor endpoint is genuinely useful in the Soča. A long valley XC down to the Adriatic can take six hours to fly, and the forecast that matters is not the one at the launch waypoint but the one that walks ahead of you through time. /v1/corridor in time-aware mode does that without you having to stitch dozens of point requests together. Day-window and sounding labels use Europe/Ljubljana.
Slovenia coordinate range
The live si/4km region covers the Soča Valley, Julian Alps, Karavanke and Kamnik-Savinja Alps. Valid coordinates for queries sit inside this bounding box:
Latitude
44.9° N - 47.4° N
Longitude
12.7° E - 17.3° E
Requests outside this domain return 400 Bad Request with a message explaining the coordinates are outside si coverage. See the coverage overview for other regions.
Start querying Slovenia soaring data now.
Free tier - 25 queries/day. No credit card required.