L'API météo pour tout ce que vous construisez

Météo mondiale, marine, prévisions de pluie et qualité de l'air — précis partout, à partir des meilleurs modèles météorologiques du monde.

Get your API key500 requests per day Documentation Tarifs

Try it now

// Current weather anywhere on Earth
const res = await fetch(
  'https://skiesatlas.com/api/v1/weather?lat=48.85&lon=2.35',
  { headers: { 'X-API-Key': 'YOUR_KEY' } }
);
const { temperature_c, wind_speed_kmh } = await res.json();
// { temperature_c: 24.1, wind_speed_kmh: 5.9, condition: "clear" }

REST endpoints

Weather models

Global

Land, sea & sky

<200ms

Median response

Smart model routing

Modèles locaux haute résolution (ICON-D2 2 km, HRRR 3 km) si disponibles, ECMWF IFS 9 km partout. Automatique et transparent.

Rain nowcast

Précipitations minute par minute pour les heures à venir — la réponse « va-t-il pleuvoir » pour vos applis.

Marine & tides

Vagues, houle, état de la mer, température de l'eau, plus les horaires de marée fournis par TidesAtlas.

Built for AI agents

Serveur MCP natif — branchez la météo en direct dans Claude, Cursor et tout agent compatible MCP.

Une seule API pour tous vos besoins météo

Des applis de voile à la prévision solaire, SkiesAtlas fournit les données que les développeurs utilisent vraiment.

Marine & sailing

Vagues, houle, vent et marées pour la navigation, la régate et les applis côtières.

Agriculture

Pluie, conditions au sol, alertes gel et canicule pour l'agriculture connectée.

Solar & energy

Rayonnement solaire et couverture nuageuse pour le rendement PV et la prévision réseau.

Outdoor apps

Pluie imminente, indice UV et conditions pour la course, le vélo et les déplacements.

Aviation & drones

Vent, rafales, visibilité et base des nuages pour le vol et les drones.

Research

Sortie modèle brute (ECMWF, ICON, GFS) pour une science reproductible.

New · Weather maps

The whole sky on one map

Temperature, wind, precipitation, clouds and pressure — rendered from our own ECMWF-AIFS & GFS models, animatable across the forecast, plus live radar. Standard slippy-map tiles you can drop onto Leaflet or Mapbox.

Open the interactive map →

🌡️ Temp 💨 Wind 🌧️ Rain ☁️ Cloud 🔵 Pressure 📡 Radar

Référence de l'API

Simple, predictable REST endpoints. Authenticate with an X-API-Key header — pass lat/lon or a port slug.

Weather Pack

GET/api/v1/weatherCurrent + hourly forecast

Temperature, wind (speed, direction & gusts), humidity, pressure, cloud cover, condition and UV index — plus derived dew point, humidex, heat index and wind chill. Routed to the best available model for your coordinates (ICON-D2, ICON-EU, HRRR or ECMWF IFS).

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required (or use `port`).
`days`	int	Forecast horizon, 1-7 (default: 3).
`hourly`	bool	Set to `1` to include the hourly series.
`units`	string	`metric` (default) or `imperial`. Works on all endpoints: °C→°F, km/h→mph, mm→in, m→ft (field suffixes change to `_f`/`_mph`/`_in`/`_ft`).

Example response

{
  "lat": 48.85, "lon": 2.35,
  "model": "ICON-EU (7km)",
  "current": {
    "temperature_c": 24.1, "humidity_pct": 34,
    "wind_speed_kmh": 5.9, "wind_direction_deg": 215, "wind_gust_kmh": 14.2,
    "pressure_hpa": 1017, "cloud_cover_pct": 12,
    "condition": "clear", "uv_index": 2.7
  }
}

GET/api/v1/forecastUp to 14-day forecast

Multi-day forecast up to 14 days — 3-hourly series (temperature, wind, precipitation, cloud, pressure, humidity) plus daily aggregates (min/max, precip total, max wind) with a per-day confidence (high ≤7d, medium ≤10d, low = trend for days 11-14). Multi-model: ECMWF-AIFS global backbone (world's best AI model), refined by ICON-EU 7km (Europe) & HRRR 3km (US) near-term; NOAA GFS fills the 3-hourly gaps and the 11-14 day tail — the best model for each location & lead time, from our own store.

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.
`days`	int	1-14 (default: 7).
`units`	string	`metric` (default) or `imperial`.

Example response

{
  "models_used": ["ECMWF-AIFS", "ICON-EU", "GFS"], "run": "2026081600z", "days": 14,
  "daily": [
    { "date": "2026-08-16", "temp_min_c": 17.8, "temp_max_c": 27.1, "precip_sum_mm": 0, "wind_max_kmh": 19.4, "confidence": "high" }, ...
  ],
  "hourly": [
    { "time": "2026-08-13T00:00:00+00:00", "temperature_c": 18.2, "wind_speed_kmh": 12.1, "precipitation_mm": 0, ... }, ...
  ]
}

GET/api/v1/outlook16-day ensemble trend

Probabilistic 16-day outlook from the NOAA GEFS ensemble (31 members): daily temperature trend with an uncertainty band (temp_low/mean/temp_high), a per-day confidence level and precipitation. A trend, not a precise forecast.

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.
`units`	string	`metric` (default) or `imperial`.

{ "model": "NOAA GEFS ensemble", "daily": [
    { "date": "2026-08-27", "temp_low_c": 16.6, "temp_mean_c": 19.5, "temp_high_c": 22.4, "uncertainty_c": 2.9, "confidence": "medium" }, ... ] }

GET/api/v1/severeStorm / convective

Convective / storm parameters: CAPE, CIN, 0-3 km helicity, visibility, cloud ceiling, plus model-derived storm risk, lightning probability and hail risk.

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.

{
  "cape_jkg": 987, "cin_jkg": -57, "helicity_0_3km": 17,
  "visibility_m": 24135, "cloud_ceiling_m": 10775,
  "storm_risk": "moderate", "lightning_probability_pct": 35, "hail_risk": "low"
}

GET/api/v1/aviationMETAR + TAF, flight category

Live METAR observation and TAF forecast from the nearest airport, with computed flight category (VFR / MVFR / IFR / LIFR), a decoded observation and the raw METAR/TAF strings. Powered by aviationweather.gov (NOAA, public domain).

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.

{
  "station": "LFPG", "flight_category": "VFR",
  "metar": { "wind_kmh": 18, "visibility_m": 9999, "temperature_c": 21 },
  "raw_metar": "LFPG 131330Z 27010KT 9999 FEW040 21/12 Q1017", "raw_taf": "TAF LFPG 131100Z ..."
}

GET/api/v1/soundingVertical atmospheric profile

Model sounding on GFS pressure levels (1000 → 200 hPa): temperature, wind, humidity and geopotential height at each level, plus bulk wind shear and a low-level inversion flag. For aviation, gliding, ballooning and convective analysis.

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.

{
  "levels": [ { "pressure_hpa": 850, "temperature_c": 14.2, "wind_speed_kmh": 31, "height_m": 1487 }, ... ],
  "bulk_wind_shear_kmh": 32.8, "low_level_inversion": false
}

GET/api/v1/solarSolar irradiance + PV yield

Downward solar radiation (GHI, W/m²) hour by hour, plus an estimated PV yield per kWp and daily energy total — for solar / photovoltaic production forecasting. From NOAA GFS.

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.

{
  "hourly": [ { "time": "2026-08-13T12:00", "solar_radiation_wm2": 582, "pv_estimate_kwh_per_kwp": 0.466 }, ... ],
  "daily": [ { "date": "2026-08-13", "pv_energy_kwh_per_kwp": 5.57 }, ... ]
}

GET/api/v1/agricultureSoil & agronomy

Soil temperature & moisture at three depths (0-10, 10-40, 40-100 cm) from the GFS land model, plus ground-frost risk, growing degree-days (base 10) and a crop-spraying window for the next 48 h. For agriculture, irrigation and vineyard apps.

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.

{
  "soil": { "0_10cm": { "soil_temperature_c": 19.5, "soil_moisture_m3m3": 0.07 }, ... },
  "ground_frost_risk": false, "growing_degree_days": [ { "date": "2026-08-13", "gdd_base10": 20.6 } ],
  "spraying_window_next48h_pct": 88
}

GET/api/v1/probabilitiesAI ensemble probabilitiesPRO

Probabilistic forecast from the ECMWF AIFS-ENS 50-member AI ensemble: temperature percentiles (p10 / median / p90) with an uncertainty band, and precipitation probabilities (chance of >0.1 / >1 / >5 mm) per lead time. Sell confidence, not just a single number.

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.
`days`	int	1–7 (12-hourly steps).

{ "model": "ECMWF AIFS-ENS (50-member AI ensemble)", "steps": [ {
    "lead_h": 42, "temp_p10_c": 23.0, "temp_median_c": 24.2, "temp_p90_c": 25.4,
    "temp_uncertainty_c": 2.4, "precip_probability_pct": 30 } ] }

GET/api/v1/accuracyVerified accuracy scoresPRO

Our verified forecast accuracy, published: MAE, RMSE and bias for each model (ECMWF-AIFS, GFS, ICON-EU and the blend) at each lead time, scored continuously against real METAR observations at dozens of global stations. Transparency most weather APIs won't give you.

Param	Type	Description
`param`	string	`temperature` (default), `wind`, `pressure`.
`region`	string	`global` (default) or a region (`europe`, `asia`…).

{ "param": "temperature", "stations": 38,
  "models": { "ECMWF-AIFS": { "leads": { "24": { "mae": 1.4, "rmse": 1.9, "bias": -0.1 } } }, … } }

GET/api/v1/map/{layer}/{z}/{x}/{y}.pngWeather map tilesPRO

Slippy-map raster tiles rendered from our own models (ECMWF-AIFS & GFS) — drop them straight onto Leaflet, Mapbox GL or MapLibre. Five layers, animatable across the forecast with ?step= (hours ahead). This is the "see everything" map. Open the live interactive map →

Param	Type	Description
`layer`	path	`temperature`, `wind`, `precipitation`, `clouds`, `pressure`.
`z`/`x`/`y`	path	Standard slippy-map tile coordinates.
`step`	query	Forecast hours ahead (0 = now, up to 240).
`api_key`	query	Your key (tiles don't consume request credits).

// Leaflet
L.tileLayer("https://skiesatlas.com/api/v1/map/temperature/{z}/{x}/{y}.png?api_key=KEY&step=0").addTo(map);

GET/api/v1/lightningReal-time lightningLIVE

Real-time lightning strikes near a location from the NOAA GOES-19/18 Geostationary Lightning Mapper (updated every ~2 minutes): strike count in radius, activity level, the nearest strike (distance & minutes-ago), a storm_overhead flag and the recent strike list. Public-domain data. Coverage: the Americas, Atlantic & Pacific (GOES field of view).

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.
`radius`	float	Search radius in km (default 50, max 500).
`window`	int	Look-back window in minutes (default 15, max 20).

{ "strike_count": 239, "activity": "extreme", "storm_overhead": true,
  "nearest_strike": { "distance_km": 3.4, "minutes_ago": 2.7 }, "data_age_minutes": 2 }

GET/api/v1/nowcastMinute precipitation nowcast

Hyperlocal 0–60 minute rain nowcast: live radar intensity right now at the point, plus rain approaching from upwind with a minutes-to-arrival ETA — radar truth advected by the model wind field. The "will it rain in the next 20 minutes?" answer.

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.

{ "raining_now": false, "intensity_now": "none",
  "approaching": true, "minutes_to_rain": 18, "approaching_intensity": "moderate",
  "summary": "Moderate rain approaching, starting in about 18 min" }

GET/api/v1/summaryDaily summary + weather codes

A human-readable daily summary plus a standardised WMO-like weather code and icon name for each day — everything a consumer app UI needs to render a forecast card without post-processing.

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.
`days`	int	1–15 (default 5).

{ "today": "Clear sky, 22–38°C", "days": [ {
    "date": "2026-08-16", "weather_code": 61, "condition": "Light rain",
    "icon": "rain", "summary": "Light rain, 20–29°C, 1 mm precipitation" } ] }

GET/api/v1/space-weatherSpace weather & aurora

The whole sky, literally: planetary Kp index (now + 3-day forecast), geomagnetic storm level (G1–G5) and active NOAA alerts, plus — with lat/lon — the aurora visibility probability at that location from the OVATION model. From NOAA SWPC (public domain).

Param	Type	Description
`lat` / `lon`	float	Optional. Returns aurora probability at this point.

{ "kp_index": { "value": 1.33, "storm_level": "quiet" }, "max_forecast_kp": 4.0,
  "aurora": { "probability_pct": 1, "visibility": "unlikely" } }

GET/api/v1/cyclonesActive tropical cyclones

Live tropical cyclones from the NOAA National Hurricane Center: name, category (Saffir-Simpson), position, maximum sustained wind, central pressure and movement, plus links to the official forecast track & cone. Pass optional lat/lon to sort by distance and get the nearest storm. Atlantic & Eastern Pacific basins.

Param	Type	Description
`lat` / `lon`	float	Optional. Sorts storms by distance from this point.

{ "count": 3, "active_storms": [ {
    "name": "Cristobal", "category": "Category 1", "max_sustained_wind_kmh": 120,
    "pressure_hpa": 982, "position": { "lat": 25.4, "lon": -71.2 },
    "movement": { "direction_deg": 315, "speed_kmh": 22 } } ] }

POST/api/v1/batchMulti-point (bulk) weather

Current weather for many locations in a single call (up to 50). Ideal for fleets, store networks, sensor grids and dashboards — one round-trip instead of 50. Each result carries your optional id and a cached flag.

Field (JSON body)	Type	Description
`points`	array	`[{lat, lon, id?}, …]` — 1 to 50 locations. Required.

// POST body
{ "points": [ { "lat": 48.85, "lon": 2.35, "id": "paris" },
             { "lat": 43.7, "lon": 7.26, "id": "nice" } ] }
// → { "count": 2, "results": [ { "id": "paris", "weather": { "temperature_c": 32.6 } }, … ] }

POST/api/v1/routeRoute weather (along a trip)

Weather along a journey: POST a list of waypoints with a speed (or explicit ETAs) and get the forecast valid at each point's estimated time of arrival, plus a trip summary (max gust, worst-gust location, total precipitation, distance). For logistics, road-trips, sailing and delivery routing.

Field (JSON body)	Type	Description
`waypoints`	array	`[[lat,lon], …]` in order (2–100 points).
`speed_kmh`	float	Travel speed to compute ETAs (default 60).
`start_time`	string	ISO departure time (default now).
`points`	array	Alternative: `[{lat,lon,eta}]` with explicit ETAs.

// POST body → weather at each ETA
{ "waypoints": [[48.39,-4.49],[47.22,-1.55],[46.16,-1.15]], "speed_kmh": 60 }
// → { "distance_km": 376.9, "summary": { "max_wind_gust_kmh": 30.4 }, "legs": [ … ] }

POST/api/v1/alertsWeather alerts platform

Create weather alert rules that we evaluate every hour against the forecast horizon and deliver to webhook, Slack, Microsoft Teams, email or mobile push when the condition is met. Manage with GET /api/v1/alerts (list) and DELETE /api/v1/alerts?id=…. Configurable cooldown_hours prevents alert storms.

Field (JSON body)	Type	Description
`name`	string	Alert label. Required.
`lat` / `lon`	float	Location. Required.
`metric`	string	`temperature_c`, `wind_speed_kmh`, `wind_gust_kmh`, `precipitation_mm`, `fire_danger`, `ice_risk`…
`operator`	string	`gt`, `lt`, `gte`, `lte`, `eq`.
`threshold`	string	Numeric value, or a label (`high`, `extreme`…) for categorical metrics.
`horizon_hours`	int	How far ahead to watch (1–240, default 24).
`channel`	string	`webhook`, `slack`, `teams`, `email`, `push`.
`target`	string	Webhook/Slack/Teams URL, email address, or Expo push token.

// POST body
{ "name": "Storm wind Brest", "lat": 48.4, "lon": -4.5,
  "metric": "wind_gust_kmh", "operator": "gt", "threshold": "90",
  "horizon_hours": 48, "channel": "slack", "target": "https://hooks.slack.com/…" }

GET/api/v1/indicesBusiness / sector indices

Ready-to-use sector indices derived from the forecast: energy heating & cooling degree-days (base 18°C), wind-power capacity factor from an 80 m generic turbine curve, Hot-Dry-Windy fire danger, and road ice risk. For utilities, renewables, insurance and highway operations.

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.

{
  "energy_degree_days": [ { "date": "2026-08-13", "hdd_c": 0, "cdd_c": 9.1 } ],
  "wind_power": [ { "date": "2026-08-13", "capacity_factor_pct": 4 } ],
  "fire_weather": [ { "date": "2026-08-13", "fire_danger": "extreme" } ],
  "road_risk": [ { "date": "2026-08-13", "ice_risk": "none" } ]
}

GET/api/v1/conditionsEverything at once

A single call that merges weather, marine, precipitation and air quality for a location — perfect for dashboards.

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.

{
  "weather": { "temperature_c": 18.4, ... },
  "marine": { "wave_height_m": 0.4, ... },
  "rain": { "will_rain": false },
  "air_quality": { "air_quality_index": 2 }
}

GET/api/v1/astronomySun & moon data

Sunrise, sunset, dawn, dusk and day length, plus moon phase, illumination, moon age, moonrise and moonset. Computed in-house from astronomical algorithms — no external calls, instant.

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.
`date`	YYYY-MM-DD	Start date, UTC (default: today).
`days`	int	1-7 (default: 1).

Example response

{
  "lat": 48.39, "lon": -4.49, "timezone": "UTC", "days": 1,
  "data": [ {
    "date": "2026-03-27",
    "sun": { "sunrise": "06:06", "sunset": "18:41", "dawn": "05:35", "dusk": "19:12", "day_length": "12:35" },
    "moon": { "phase": "first_quarter", "illumination_pct": 66.8, "age_days": 9, "moonrise": "13:45", "moonset": "03:12" }
  } ]
}

Historical

GET/api/v1/historyPast weather (reanalysis)

Daily historical weather — temperature (min/max), precipitation and wind — for any past date back to 1940. Powered by the ERA5 reanalysis (ECMWF), the reference dataset for past weather.

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.
`date`	YYYY-MM-DD	Past start date. Required.
`days`	int	1-31 (default: 7).

Source: ERA5 reanalysis (ECMWF / Copernicus Climate Change Service) — ingested directly from the public ERA5 archive, not a third-party proxy. Available up to ~7 days before today.

Example response

{
  "lat": 48.39, "lon": -4.49, "start": "2025-06-01", "end": "2025-06-07", "days": 7,
  "source": "ERA5 reanalysis — ECMWF / Copernicus C3S",
  "daily": [
    { "date": "2025-06-01", "temp_max_c": 17.2, "temp_min_c": 11.4, "precip_mm": 1.3, "wind_max_kmh": 24.1, "wind_gust_kmh": 41.0 },
    ...
  ]
}

Marine Pack

GET/api/v1/marineWaves, swell & sea temperature

Wave height, swell, wind-wave, sea state and sea-surface temperature from NOAA WaveWatch III and MUR SST.

Param	Type	Description
`lat` / `lon`	float	Ocean coordinates. Required.
`days`	int	1-7 (default: 3).

{
  "wave_height_m": 0.4, "swell_height_m": 0.05,
  "sea_state": "calm_rippled", "sst_c": 21.3
}

Precipitation & Winter

GET/api/v1/rainPrecipitation nowcast

Hour-by-hour precipitation for the coming hours, with a simple will_rain flag.

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.
`hours`	int	Horizon in hours, 1-12 (default: 6).

Example response

[
  { "until": "12:00", "precip_mm": 2.1, "will_rain": true },
  { "until": "13:00", "precip_mm": 0.0, "will_rain": false }
]

GET/api/v1/snowSnowfall, depth & freezing

Snowfall, snow depth, freezing level, thunderstorm potential and solar radiation — for mountain and winter apps.

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.
`days`	int	1-7 (default: 3).

Example response

{
  "snowfall_mm": 3.1, "snow_depth_cm": 180,
  "freezing": true, "solar_radiation_wm2": 210
}

GET/api/v1/radarLive rain radar + satellite

Live precipitation radar + IR satellite tile URLs — past frames and nowcast (future) frames for animated maps. Standard {z}/{x}/{y} slippy tiles (Leaflet, Mapbox GL…). Powered by RainViewer.

Param	Type	Description
`lat` / `lon`	float	Coordinates (map centre). Required.

{ "radar": {
    "past": [ { "time": "2026-08-13T14:30:00Z", "tile_url": "https://tilecache.rainviewer.com/.../{z}/{x}/{y}/1/1_1.png" }, ... ],
    "nowcast": [ ... ] },
  "satellite": { "infrared": [ ... ] } }

Air & Environment

GET/api/v1/air-qualityPM2.5, ozone, NO2 & AQI

Particulate matter, ozone, NO₂, SO₂ and a computed air-quality index, from Copernicus CAMS.

Param	Type	Description
`lat` / `lon`	float	Coordinates. Required.

Example response

{
  "pm2p5": 5.3, "pm10": 9.9,
  "o3": 73, "no2": 12,
  "air_quality_index": 2
}

GET/api/v1/pollenPollen forecast (Europe)

European pollen forecast (CAMS) for 6 species — alder, birch, grass, mugwort, olive, ragweed — with concentration (grains/m³) and a risk level per species + overall. Europe only.

{ "pollen": { "grass": { "grains_m3": 5, "label": "Faible" }, "mugwort": { "grains_m3": 14.4, "label": "Modéré" }, ... },
  "overall_label": "Modéré", "dominant": "mugwort" }

GET/api/v1/aerosolsDust, smoke & AOD

Worldwide Saharan dust, wildfire smoke and total aerosol optical depth (CAMS global) — optical depth values + a risk level for dust and smoke.

{ "aerosol_optical_depth": 0.266,
  "dust_aod": 0.042, "dust_label": "Négligeable",
  "smoke_aod": 0.03, "smoke_label": "Négligeable" }

Tides Pack

GET/api/v1/tidesTide times & heights

High/low tide times and heights for 17,000+ ports, powered by TidesAtlas. Pass a port slug or coordinates.

Param	Type	Description
`port`	string	Port slug, e.g. `san-francisco`.
`days`	int	1-14 (default: 1).

{
  "extremes": [
    { "datetime": "2026-03-27T05:12:00-07:00", "height_m": 1.82, "type": "high" },
    { "datetime": "2026-03-27T11:44:00-07:00", "height_m": 0.31, "type": "low" }
  ]
}

Essayez en direct

Collez votre clé API, choisissez un endpoint et cliquez Envoyer — de vraies réponses, ici même.

// The JSON response will appear here

No key yet? Get one free — 500 requests/day, no card.

Démarrage rapide dans votre langage

Grab an API key, then call the API with cURL, JavaScript, Python — or plug it straight into an AI agent via MCP.

cURL

JavaScript

Python

MCP (AI agents)

# Current weather in Paris
curl -H "X-API-Key: YOUR_KEY" \
  "https://skiesatlas.com/api/v1/weather?lat=48.85&lon=2.35"

const res = await fetch('https://skiesatlas.com/api/v1/weather?lat=48.85&lon=2.35', {
  headers: { 'X-API-Key': 'YOUR_KEY' }
});
const data = await res.json();

import requests
r = requests.get(
  "https://skiesatlas.com/api/v1/weather",
  params={"lat": 48.85, "lon": 2.35},
  headers={"X-API-Key": "YOUR_KEY"})
print(r.json())

Add SkiesAtlas to Claude Desktop, Cursor or any MCP client — your agent gets live weather tools:

{
  "mcpServers": {
    "skiesatlas": {
      "url": "https://skiesatlas.com/mcp",
      "headers": { "X-API-Key": "YOUR_KEY" }
    }
  }
}

Un vrai moteur de prévision — pas un simple relais

SkiesAtlas ne se contente pas de relayer des données tierces. Nous ingérons la sortie brute des modèles numériques, la décodons, choisissons le meilleur modèle pour chaque coordonnée et fusionnons le tout dans une API claire et cohérente — livrée en moins de 200 ms.

1 · Ingestion

Nous récupérons la sortie GRIB brute directement auprès des grands centres météo mondiaux, à chaque run de modèle.

2 · Routage

Pour chaque coordonnée, nous sélectionnons le modèle de plus haute résolution disponible — ICON-D2 2 km, HRRR 3 km ou ECMWF 9 km partout. Automatique et transparent.

3 · Unification

Six formats de modèles différents deviennent un seul schéma JSON prévisible — les mêmes noms de champs partout, unités métriques et horodatages ISO.

4 · Livraison

Un cache agressif par run livre les réponses en moins de 200 ms, avec repli automatique sur les dernières données pour que votre app ne tombe jamais en panne.

Sources de données & licences

En coulisses, nous décodons et combinons ces modèles météo et océaniques officiels, sous licence ouverte, en une seule API.

ECMWF AIFS & IFS

The world's best global model — AIFS (ECMWF's AI system) is our worldwide backbone.

CC-BY 4.0

DWD ICON

ICON-D2 (2 km) & ICON-EU (7 km) high-resolution Europe.

DWD Open Data · GeoNutzV

NOAA GFS, GEFS & HRRR

Global GFS + GEFS ensemble + 3 km HRRR rapid refresh over the US.

Public domain (US Gov)

ECMWF AIFS-ENS

50-member AI ensemble for the /probabilities endpoint.

CC-BY 4.0

NOAA GOES GLM

Geostationary Lightning Mapper — real-time lightning (/lightning).

Public domain

NOAA WaveWatch III

Global wave & swell model for the marine endpoint.

Public domain

Copernicus CAMS

Global air quality, pollen & aerosols (dust, smoke).

Copernicus / ADS

NOAA MUR SST

1 km sea-surface temperature analysis.

Public domain

ECMWF ERA5

Reanalysis powering the /history endpoint (past weather).

Copernicus C3S · CC-BY

NOAA NHC & SWPC

Tropical cyclones (/cyclones) + space weather & aurora (/space-weather).

Public domain

aviationweather.gov

METAR/TAF (/aviation) & the observations that verify our accuracy.

NOAA · Public domain

RainViewer

Live precipitation radar & satellite tiles (/radar).

Commercial use w/ attribution

TidesAtlas →

Tide times & heights for 17,000+ ports (the /tides endpoint).

tidesatlas.com

SkiesAtlas builds the ingestion, routing, unification and caching layer on top of these open datasets. Attribution to upstream providers is handled on our side.

Une précision fiable

Nous nous appuyons sur la meilleure science disponible et nous nous vérifions en permanence.

Des modèles de référence

ECMWF IFS est régulièrement classé comme le modèle global le plus précis au monde. Nous l'utilisons comme socle mondial et y superposons des modèles régionaux à haute résolution.

Validé en continu

Toutes les quelques heures, nous comparons nos résultats à des prévisions de référence indépendantes sur plus de 20 villes dans le monde pour détecter toute dérive au plus tôt.

Mis à jour toute la journée

Les modèles se rafraîchissent jusqu'à quatre fois par jour (00/06/12/18 UTC). Notre moteur ré-ingère chaque run automatiquement, pour que vous ayez toujours la dernière prévision.

Live forecast accuracy

● verified continuously

Mean absolute temperature error (°C) vs real METAR observations at 1130 global stations — lower is better. Our backbone ECMWF-AIFS and the multi-model BLEND lead the field.

Model	analysis	+24h	+48h	+72h	+120h
ICON-EU	1.02	1.15	1.25	1.37	1.57
ECMWF-AIFS backbone	1.25	1.35	1.41	1.48	1.55
BLEND	1.32	1.46	1.55	1.63	1.77
GFS	1.79	1.87	1.96	2.06	2.19

Full scores (all parameters, lead times & regions) via GET /api/v1/accuracy. Longer lead-time skill fills in as forecast/observation pairs accumulate.

Authentification & Limites de requêtes

Authentification

Transmettez votre clé API via le header X-API-Key (recommandé) ou en paramètre api_key.

# Header (recommended)
curl -H "X-API-Key: YOUR_KEY" "https://skiesatlas.com/api/v1/weather?lat=48.85&lon=2.35"

# Query parameter
curl "https://skiesatlas.com/api/v1/weather?lat=48.85&lon=2.35&api_key=YOUR_KEY"

Limites de requêtes

Chaque réponse indique votre consommation dans les en-têtes. Dépasser votre quota renvoie 429 Too Many Requests — attendez avant de réessayer.

Header	Description
`X-RateLimit-Limit`	Your daily request limit (paid plans).
`X-RateLimit-Remaining`	Requests left today.

Plan	Quota	HTTP on exceed
Free	500 requests / day	`429`
Basic	10,000 requests / day	`429`
Starter	50,000 requests / day	`429`
Pro	200,000 requests / day	`429`
Business	1,000,000 requests / day	`429`

Quotas reset every day at 00:00 UTC, on the free plan too. A 402 is different: it means the endpoint itself requires a higher plan (/nowcast needs Starter or above; /batch, /history, /radar, /lightning, /probabilities, /alerts and /route need Pro or above).

Tarifs

Start free, upgrade when you scale. No credit card to get your key.

Free

$0/mo

500 requests per day

✓Core weather & forecast API
✓ECMWF-AIFS multi-model blend
✓Verified accuracy endpoint

Get started

Basic

$7.99/mo

10,000 requests / day

✓All core endpoints
✓Current + 14-day forecast
✓Marine, air quality, tides & more
✓ECMWF-AIFS · verified accuracy

Choose Basic

Starter

$19/mo

50,000 requests / day

✓Everything in Basic, plus:
✓Weather map tiles (5 layers)
✓Minute rain nowcast
✓Batch multi-point endpoint

Choose Starter

Questions fréquentes

D'où viennent les données météo ?

Nous faisons tourner notre propre moteur au-dessus des meilleurs modèles ouverts au monde — ECMWF IFS, DWD ICON, NOAA GFS/HRRR, WaveWatch III, Copernicus CAMS et MUR SST. Nous décodons la sortie brute, routons chaque requête vers le modèle de plus haute résolution pour la zone, et renvoyons une réponse unique, propre et cohérente. Vous obtenez un vrai produit, pas six flux bruts à assembler vous-même.

Quelle est la précision des prévisions ?

Nous utilisons ECMWF IFS — largement considéré comme le modèle global le plus précis au monde — comme socle, plus des modèles régionaux à haute résolution (2–3 km) là où ils existent. Nous validons nos résultats en continu par rapport à des références indépendantes, avec un écart typique d'environ 0,6 °C sur la température.

Quelles sont les limites de requêtes ?

Chaque plan dispose d'un quota journalier remis a zero a 00h00 UTC — le plan gratuit compris : 500 requetes par jour, renouvelees chaque jour. Plans payants : Basic 10 000/jour, Starter 50 000/jour, Pro 200 000/jour, Business 1 000 000/jour. Chaque reponse indique votre quota restant dans l'en-tete X-RateLimit-Remaining.

Puis-je annuler à tout moment ?

Oui. Les abonnements sont mensuels et annulables à tout moment — votre plan reste actif jusqu'à la fin de la période payée, puis repasse automatiquement en gratuit.

Puis-je l'utiliser avec des agents IA ?

Bien sûr. SkiesAtlas fournit un serveur MCP natif sur https://skiesatlas.com/mcp — ajoutez-le à Claude Desktop, Cursor ou n'importe quel client MCP et votre agent dispose d'outils météo en direct.

Proposez-vous les marées ?

Oui, via le point d'entrée /api/v1/tides, propulsé par TidesAtlas — horaires et hauteurs de marée pour plus de 17 000 ports dans le monde.

Lancez vos fonctionnalités météo dès aujourd'hui

Obtenez votre clé API en quelques secondes et faites votre premier appel en une ligne de code.

Get your API key

L'API météo pour tout ce que vous construisez

Smart model routing

Rain nowcast

Marine & tides

Built for AI agents

Une seule API pour tous vos besoins météo

Marine & sailing

Agriculture

Solar & energy

Outdoor apps

Aviation & drones

Research

The whole sky on one map

Référence de l'API

Example response

Example response

Example response

Example response

Example response

Example response

Example response

Essayez en direct

Démarrage rapide dans votre langage

Un vrai moteur de prévision — pas un simple relais

1 · Ingestion

2 · Routage

3 · Unification

4 · Livraison

Sources de données & licences

ECMWF AIFS & IFS

DWD ICON

NOAA GFS, GEFS & HRRR

ECMWF AIFS-ENS

NOAA GOES GLM

NOAA WaveWatch III

Copernicus CAMS

NOAA MUR SST

ECMWF ERA5

NOAA NHC & SWPC

aviationweather.gov

RainViewer

TidesAtlas →

Une précision fiable

Des modèles de référence

Validé en continu

Mis à jour toute la journée

Live forecast accuracy

Authentification & Limites de requêtes

Authentification

Limites de requêtes

Tarifs

Questions fréquentes

Lancez vos fonctionnalités météo dès aujourd'hui

Create your API account