#weather

Marine- und Surfvorhersagen als API, powered by Open-Meteo — sauberes JSON, kein API-Key. Rufen Sie den aktuellen Meereszustand sowie die stündliche und tägliche Wellenvorhersage für jede Küstenlinie per Breitengrad/Längengrad oder einfach per Ortsnamen ab: signifikante Wellenhöhe, Periode und Richtung, plus die Dünungs- und Windwellenkomponenten separat ausgewiesen, sowie tägliche Maxima und Hauptrichtungen. Ein integrierter Geocoding-Helfer wandelt einen Ortsnamen in Koordinaten um. Vorhersagen laufen bis zu zehn Tage im Voraus. Live-Vorhersagedaten direkt aus dem marinen Modell von Open-Meteo. Ideal für Surf-Report-Apps, Segel- und Bootstools, Küsten- und Meeresbetriebs-Dashboards sowie Strand-Widgets. 4 Datenendpunkte. Authentifiziert mit einem x-oanor-key; Fair-Use-Ratenlimits pro Plan.

api.oanor.com/marine-api

Apparent ("feels-like") temperature maths as an API, computed locally and deterministically from the official meteorological formulas — the three indices a weather app, dashboard or safety tool reports alongside the raw thermometer reading. The heat-index endpoint gives the US National Weather Service heat index from the air temperature and relative humidity using the full Rothfusz regression with its low- and high-humidity adjustments: because high humidity stops sweat evaporating, the body cannot shed heat and it feels far hotter than the thermometer — 90 °F at 70 % humidity feels like about 106 °F — and the result comes with a risk category from caution through danger to extreme danger. The wind-chill endpoint gives the 2001 NWS / Environment Canada wind chill from the temperature and wind speed, the cold-weather counterpart, with the frostbite-time risk band — 0 °F in a 15 mph wind feels like about −19 °F. The humidex endpoint gives Canada's warm-weather index from the temperature and humidity on the same Celsius scale, derived through the water-vapour pressure. Everything is returned in both °F and °C and computed locally and deterministically, so it is instant and private. Ideal for weather and outdoor apps, occupational-safety and sports tools, smart-home and HVAC dashboards, and climate and health utilities. Pure local computation — no key, no third-party service, instant. Human-comfort estimates in shade and light wind. 3 compute endpoints. For dew point and moist-air properties use a psychrometric API; for live conditions a weather API.

api.oanor.com/apparenttemp-api

Feels-like (apparent) temperature meteorology as an API, computed locally and deterministically. The wind-chill endpoint computes how cold the air feels when wind carries body heat away, using the Environment Canada formula WC = 13.12 + 0.6215·T − 11.37·V^0.16 + 0.3965·T·V^0.16 from the air temperature (°C) and wind speed (km/h), valid at 10 °C or below with wind of at least 4.8 km/h. The heat-index endpoint computes how hot it feels in warm, humid air with the US National Weather Service Rothfusz regression from temperature and relative humidity, since high humidity slows sweat evaporation, with the low-/high-humidity adjustments. The apparent-temperature endpoint computes the Australian Bureau of Meteorology apparent temperature, AT = Ta + 0.33·e − 0.70·ws − 4.00, which combines the warming effect of humidity (through the vapour pressure e) and the cooling effect of wind (ws in m/s) in a single feels-like value. Temperatures are in °C (Fahrenheit also returned), humidity in %, wind in km/h for wind chill and m/s for apparent temperature. Everything is computed locally and deterministically, so it is instant and private. Ideal for weather, outdoor-activity, sports, smart-home and wearable app developers, comfort and safety tools, and meteorology education. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is the feels-like temperature calculator; for the occupational WBGT heat-stress index use a WBGT API and for live weather observations a weather data API.

api.oanor.com/feelslike-api

Meteorological formulas as an API — the derived weather figures, computed from your own readings, with no data feed or key needed. The wind-chill endpoint gives the "feels like" cold using the Environment Canada formula in metric (°C, km/h) or the US NWS formula in imperial (°F, mph), and flags when the reading is outside the valid range. The heat-index endpoint gives the apparent temperature from heat and humidity using the NWS Rothfusz regression with the standard low- and high-humidity adjustments. The dew-point endpoint uses the Magnus formula to turn temperature and relative humidity into the dew point, and also returns the vapour pressure and the absolute humidity. The beaufort endpoint maps a wind speed (m/s, km/h, mph or knots) to its Beaufort force and description, or a force back to its speed range. Everything is computed locally and deterministically, so it is instant and private. Ideal for weather apps and dashboards, agriculture and HVAC, marine and aviation, and outdoor and safety tools. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 5 endpoints. This computes weather formulas from your own readings; for live forecasts and observations use a weather data API.

api.oanor.com/weathercalc-api

Global river-discharge and flood forecasting as an API, powered by the GloFAS (Global Flood Awareness System) model via Open-Meteo. For any coordinate on Earth, get a daily river-discharge forecast of up to 30 days — with the ensemble spread (mean, max and min across forecast members) so you can gauge uncertainty — plus up to 90 days of recent discharge history, and a quick current-situation summary with today's discharge and a 7-day outlook (peak day, max/min and rising/falling/stable trend). Discharge is reported in cubic metres per second. Ideal for flood early-warning and monitoring, insurance and reinsurance risk, agriculture and irrigation planning, hydropower, and environmental research. Data covers modelled rivers worldwide (none over open ocean). Open data via Open-Meteo / GloFAS.

api.oanor.com/flood-api

Clima de aviación en vivo para cualquier aeropuerto como API, retransmitido desde el Centro Meteorológico de Aviación de la NOAA. Obtenga la observación METAR actual para una estación OACI (p. ej., KJFK → Nueva York JFK: temperatura, punto de rocío, viento, visibilidad, altímetro, capas de nubes, categoría de vuelo VFR/MVFR/IFR/LIFR y el informe sin procesar) o el pronóstico de aeródromo terminal TAF. Consulte una estación o hasta 10 a la vez (KJFK,EGLL,EDDF). Se devuelven tanto los campos decodificados como el texto sin procesar. Ideal para herramientas de planificación de vuelos, paneles de aviación, operaciones de drones/UAV y aplicaciones meteorológicas.

api.oanor.com/metar-api

Classify any location's climate with the Köppen-Geiger system — the standard used across geography, ecology, agriculture and architecture. Provide a location's twelve monthly mean temperatures and precipitation totals and get back its climate code (for example Cfb or BWh), the climate group and full name, a description, and a block of derived statistics (annual mean temperature, annual precipitation, warmest and coldest month, driest month, months above 10 °C, summer-precipitation share and the aridity threshold). The hemisphere is auto-detected from the temperature curve, or you can set it explicitly. A reference endpoint returns all thirty Köppen-Geiger codes with names, groups, descriptions and example cities. Every endpoint accepts input via the query string or the request body and returns lean JSON. Pure server-side computation (no third-party upstream), so responses are instant and always available. Ideal for EdTech and geography tools, AgTech and crop-suitability apps, architecture and GIS pipelines.

api.oanor.com/climate-api

Decades of historical weather for any location on Earth, from 1940 to the present. Pull daily records — temperature highs, lows and means, apparent temperature, precipitation, rain, snowfall, wind speed, gusts and direction — or an hourly series with temperature, humidity, precipitation, wind, pressure and cloud cover, or a period summary with mean temperature, the hottest and coldest day, total precipitation and wet-day counts. Global coverage from the ERA5 reanalysis archive via Open-Meteo, delivered as tidy JSON through a fast, reliable API. Ideal for agriculture and energy, insurance and risk, climate research, construction and travel planning.

api.oanor.com/weatherhistory-api

Current air quality and hourly forecast for any location — European and US AQI plus PM2.5, PM10, ozone, nitrogen dioxide, sulphur dioxide, carbon monoxide, dust and UV index. Powered by Open-Meteo. Just pass a latitude and longitude.

api.oanor.com/airquality-api

Real-time weather: current conditions, multi-day forecast, historical weather, marine/wave forecast, astronomy (sun/UV), air quality, geocoding and timezone.

api.oanor.com/weather-api