Endpoints
Send your key in the X-API-Key header. All endpoints live under https://atmoatlas.com/api/v1/; coordinates are lat and lon in decimal degrees.
curl -H "X-API-Key: YOUR_KEY" "https://atmoatlas.com/api/v1/forecast?lat=48.85&lon=2.35&days=3"
Forecasts
/api/v1/weather?lat=48.85&lon=2.35Conditions now and the next hours: temperature, felt temperature, wind and gusts, humidity, pressure, clouds, UV.All plans
/api/v1/forecast?lat=48.85&lon=2.35&days=7Up to 14 days, every 3 hours plus daily summaries, with a confidence label per day.All plans
/api/v1/summary?lat=48.85&lon=2.35&days=5One sentence per day and a WMO-style weather code with icon name, ready to display.All plans
/api/v1/outlook?lat=48.85&lon=2.3516-day temperature outlook from the GEFS ensemble, with an uncertainty band.All plans
/api/v1/probabilities?lat=48.85&lon=2.35&days=5Percentiles and rain probabilities from the 50 members of ECMWF AIFS-ENS.Pro+
/api/v1/accuracy?param=temperature®ion=globalOur measured error against weather stations, by model and lead time.All plans
/api/v1/history?lat=48.85&lon=2.35&date=2025-07-14A past day from the ERA5 reanalysis: temperatures, rain, wind.Pro+
Rain and storms
/api/v1/nowcast?lat=51.51&lon=-0.13Rain in the next 60 minutes in 10-minute steps, from official radars (OPERA, DWD, NOAA) or our models outside radar coverage.Starter+
/api/v1/rain?lat=48.85&lon=2.35&hours=6Hour-by-hour rain for 1 to 12 hours with a will_rain flag (ICON-D2, ICON-EU, GFS).All plans
/api/v1/radarTile URLs of our radar mosaic (last 2 hours + radar nowcast) and of the 12-hour rain forecast map.Pro+
/api/v1/severe?lat=27&lon=-81Storm ingredients (CAPE, CIN, helicity) and storm, lightning and hail risk.All plans
/api/v1/lightning?lat=27&lon=-81Lightning detected near a point in the last minutes (NOAA GOES GLM).Pro+
/api/v1/cyclones?lat=25&lon=-70Active tropical cyclones from NOAA NHC, sorted by distance if you pass a point.All plans
Air, sea and snow
/api/v1/air-quality?lat=48.85&lon=2.35PM2.5, PM10, ozone, NO₂, SO₂ and the European air quality index (Copernicus CAMS).All plans
/api/v1/pollen?lat=48.85&lon=2.35Pollen of six species with a risk level, over Europe (CAMS).All plans
/api/v1/aerosols?lat=25&lon=15Desert dust, wildfire smoke and aerosol optical depth.All plans
/api/v1/marine?lat=43.66&lon=7.21Waves, swell, sea state and sea temperature.All plans
/api/v1/tides?port=brest&days=1High and low tide times and heights for a port.All plans
/api/v1/snow?lat=45.9&lon=7.9Snowfall, snow depth and freezing level.All plans
Specialised data
/api/v1/conditions?lat=48.4&lon=-4.5Weather, sea, rain and air in one call.All plans
/api/v1/aviation?lat=49&lon=2.55METAR and TAF of the nearest airport, decoded, with flight category.All plans
/api/v1/sounding?lat=48.85&lon=2.35Vertical profile of temperature, wind and humidity, with shear and inversions.All plans
/api/v1/solar?lat=43.6&lon=3.9Solar irradiance and estimated photovoltaic output per kWp.All plans
/api/v1/agriculture?lat=48.2&lon=1.8Soil temperature and moisture, frost risk, growing degree-days, spraying windows.All plans
/api/v1/indices?lat=43.9&lon=5.8Heating and cooling degree-days, wind power factor, fire danger, road ice risk.All plans
/api/v1/astronomy?lat=48.85&lon=2.35&days=2Sunrise, sunset, twilight, moon phase, moonrise and moonset.All plans
/api/v1/space-weather?lat=69.6&lon=18.9Kp index, geomagnetic storms and the chance of seeing auroras.All plans
Tools
/api/v1/batch (POST)Current weather for up to 50 points in one request.Starter+
/api/v1/route (POST)Weather along a route at the time you pass each waypoint.Pro+
/api/v1/alertsYour alert rules (GET to list, POST to create, DELETE to remove), sent by webhook, Slack, Teams or e-mail.Pro+
/api/v1/map/{layer}/{z}/{x}/{y}.pngMap tiles of temperature, wind, rain, clouds or pressure from our models, for Leaflet or Mapbox.All plans
Errors: 401 missing or invalid key, 402 endpoint not in your plan, 429 daily quota reached (resets at 00:00 UTC). If you display our data, show the attribution line returned with it.