Now live - UK coverage

Soaring weather forecasts, built for developers and pilots.

The world's first soaring-specific weather API. Thermal strength, soaring heights, convergence, cloudbase, day ratings, wind at altitude, boundary layer depth - 20+ fields, updated four times daily.

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Free tier · No credit card · 25 queries/day to start

api.convek.dev

Request

curl "https://api.convek.dev/v1/site \
  ?region=gb&resolution=4km&lat=51.94&lon=-2.08" \
 -H "Authorization: Bearer cvk_live_abc123"

Response

{
  "valid_date": "2026-04-11",
  "valid_time": "14:00",
  "rasp_model": "gb/4km",
  "site": {
    "wstar_ms": 2.1,
    "hglider_agl_m": 1340,
    "cloudbase_agl_ft": 4800,
    "surface_temp_c": 18.2,
    "thermal_trigger_temp_c": 17.5,
    "surface_wind_speed_ms": 3.1,
    "surface_wind_dir_deg": 240,
    "dewpoint_2m_c": 8.4,
    "rain_total_mm": 0,
    "convergence_ms": 0.3,
    "day_rating": "good",
    "bowen_ratio": 1.8,
    "cu_potential": true,
    "od_potential": false
  }
}

Built for everyone in soaring aviation

Gliding Clubs

Paragliding Pilots

App Developers

Instrument Makers

Competition Organisers

Everything a soaring app needs. Nothing it doesn't.

Thermal Strength

wstar updraft velocity - how strong are the thermals today?

Soaring Heights

BL top, thermalling ceiling, and glider-capped height in metres and feet.

Cloudbase & Cu Risk

Cloud-base height, Cu potential, and overdevelopment risk.

Surface & Altitude Wind

WRF 10m surface wind (captures valley flows, sea breeze, terrain channelling) plus 925, 850, 800, 700 hPa levels.

Unique

Corridor Sampling

POST launch point + bearing + max distance + spacing, get weather sampled along the corridor.

Day Rating

Poor to excellent soaring label. Instant "is it worth going?" answer.

Thermal Trigger Temp

"Thermals fire at 18°C" - the exact surface temperature needed to start thermalling. Derived from WRF, not guessed.

Sounding Profiles

Vertical atmospheric profile from surface to upper levels. Temperature, dewpoint, wind speed, and direction at every pressure level.

Unique

Route-Time-Aware Corridor

Pass launch time + ground speed, get weather sampled by estimated arrival time at each point along the route.

Flexible Time Queries

Request a specific UTC hour, or omit time and get the forecast closest to 14:00 UTC. Corridor requests can also be time-aware by arrival.

4 km Live, 2 km Next

Our own WRF simulations at 4 km today, with 2 km in development. Not repackaged global models - purpose-built for soaring.

Experimental

Down to 250 m

1 km thermal hotspot maps, 500 m site-specific forecasts, 250 m individual thermal resolution. On-demand, coming soon.

See the full field list →

From sign-up to soaring data in under a minute.

Get your API key

Make a request

Use /v1/site for one hour, or /v1/forecast for the whole day. JSON back in milliseconds.

Build something

Embed in your app, instrument, or personal planning tool.

See it working. Right now.

Pick your language and see the exact request and response. Need the full day at one point? Use /v1/forecast.

Request

curl "https://api.convek.dev/v1/site?region=gb&resolution=4km&lat=51.94&lon=-2.08" \
  -H "Authorization: Bearer cvk_live_abc123"

Response

{
  "valid_date": "2026-04-11",
  "valid_time": "14:00",
  "rasp_model": "gb/4km",
  "site": {
    "wstar_ms": 2.1,
    "hglider_agl_m": 1340,
    "cloudbase_agl_ft": 4800,
    "thermal_trigger_temp_c": 17.5,
    "surface_wind_speed_ms": 3.1,
    "bowen_ratio": 1.8,
    "convergence_ms": 0.3,
    "day_rating": "good"
  }
}

Try it free View API Docs

UK today. Europe and beyond - coming soon.

14 countries across 1 live, 4 coming soon, and 9 on the radar.

Available Now

Live

UK 4km

England, Wales, southern Scotland · Updated four times daily · 2 km planned

Get started→

Coming Soon

Germany

Expected Q3 2026

France

Expected Q3 2026

Switzerland

Expected Q4 2026

Austria

Expected Q4 2026

On the Radar

USA

Australia

Poland

Spain

Italy

South Africa

New Zealand

Brazil

Namibia

Want your country next? Tell us →

Built for everyone who cares about soaring weather.

Pilots

Check thermal strength, soaring ceiling, and day rating before you drive to the airfield. Free tier available.

Get started→

Developers

Integrate real soaring meteorology into your app or instrument. JSON API, API-key auth, predictable pricing.

View docs→

Instrument Makers

Embed structured soaring data in cockpit displays. JSON feeds, reliable four-times-daily updates, commercial licensing.

See commercial plans→

The only developer-facing soaring weather API.

Feature	● LiveConvek	SkySight	TopMeteo	RASP UK
Developer API				Not available
Thermal strength (wstar)
Soaring heights
Corridor / route sampling
Route-time-aware corridor	Yes (unique)
Sounding profiles			Some
Self-serve sign-up		Manual	Manual
JSON API responses		Maps only	Maps only	Images only

SkySight and TopMeteo are excellent products for individual pilots. We're building the missing data layer for developers, apps, and integrations.

From country-scale to individual thermals.

We run our own WRF simulations - and we're pushing the resolution further than anyone in soaring weather has gone before.

4 kmLive now

Country-Scale Forecasts

England, Wales, and southern Scotland are live today. Thermals, cloudbase, convergence, wind - the full gb/4km product.

2 kmIn development

Higher-Resolution Forecasts

Same UK domain, finer terrain detail. Built for sites where 4 km still smooths out too much of the local picture.

1 kmOn the roadmap

Thermal Hotspot Maps

See where thermals actually cluster. Ridge convergence zones, trigger points, sea breeze fronts - resolved, not smoothed.

500 mExperimental

Site-Specific Forecasts

Individual launch sites, competition venues, your home ridge. On-demand high-res runs for the places that matter most.

Live today is UK 4 km. Everything finer than that is roadmap or research, not launch-day capability.

Ready to build with real soaring data?

Get your API key in 30 seconds. 25 queries/day, no credit card.