Soaring weather data for free-flight pilots.
Thermal strength, cloudbase, trigger temperature, XC corridor conditions - structured data built for the way paragliders actually plan flights. Query it directly, integrate it into an app, or build your own pre-flight briefing tool.
The data that matters for free flight.
Every field below is available at 4 km resolution, updated four times daily - for the UK now, with more regions in 2026.
Thermal Strength (wstar)
Updraft velocity in m/s. Know whether thermals are strong and consistent enough to work before you leave the house.
Soaring Height Ceiling
Glider-capped thermalling height above ground level. Will you have workable altitude on the ridge or in the valley?
Cloudbase & Cu Potential
Cloudbase AGL and MSL, cumulus potential, and overdevelopment risk. Know when to push and when to land.
Thermal Trigger Temperature
"Thermals fire at 17°C" - the exact surface temperature needed for thermals to start. Plan your launch window precisely.
Corridor Sampling
POST a bearing and distance, get weather sampled along your planned XC route. Time-aware mode calculates conditions based on estimated arrival.
Day Rating
A single label summarising the overall soaring quality for the day. Poor, marginal, fair, good, or excellent - at a glance.
How paraglider pilots use Convek
Pre-flight check
Query your launch site before you leave home. Thermal strength, trigger temp, and day rating give you a go/no-go signal without opening five browser tabs.
XC route planning
Use corridor sampling to query weather along your planned route. The time-aware variant adjusts conditions based on when you'll actually be at each point - not just launch conditions projected forward.
Build your own briefing tool
The free tier gives you 25 queries per day - enough to build a personal pre-flight dashboard or widget for your local club. Dev plans unlock commercial use.
Start free, scale if you need to.
Free tier: 25 queries/day, no credit card. Pilot plan at £8/month unlocks 500 queries/day. Pilot Pro at £15/month for 2,000/day.