weather APIs

IQAir API provides real-time air quality index (AQI) data and weather conditions for cities and stations worldwide, powered by the IQAir sensor network.

Weatherstack is a real-time and historical weather data API that covers over 200,000 locations worldwide.

7Timer!

AccuWeather's API provides highly detailed weather forecasts, current conditions, and severe weather alerts for locations around the world.

Aemet OpenData is Spain's official meteorological agency API providing weather forecasts, observations, and climate data for Spanish territory including the Canary Islands and Balearics.

APIXU (now rebranded as Weatherstack) is a weather data API that provides current conditions, forecasts, and historical weather for locations around the world.

AQICN (Air Quality Index CN) provides real-time air quality data for over 1,000 cities worldwide, including PM2.5, PM10, ozone, and other pollutant readings.

AviationWeather.gov is a free NOAA service that provides official aviation weather data including METARs, TAFs, PIREPs, and SIGMETs used by pilots and flight planners.

ColorfulClouds (Caiyun Weather) is a Chinese weather API that delivers real-time and forecast weather data with minute-level precipitation predictions.

Euskalmet is the official meteorological API for the Basque Country in Spain, providing weather observations, forecasts, and climate records for the region.

Foreca is a professional weather data API used by businesses worldwide, offering global forecasts, current conditions, and weather alerts with high accuracy.

HG Weather is a Brazilian weather API that returns current conditions and multi-day forecasts for cities across Brazil.

The Hong Kong Observatory Open Data API provides free access to weather observations, forecasts, earthquake reports, and climate data for Hong Kong and the surrounding region.

Meteorologisk Institutt (MET Norway) provides free, high-quality weather and climate data via their Yr.no API, covering global locations with hourly and long-range forecasts.

ODWeather is a free weather and webcam API from OceanDrivers that provides real-time marine and coastal weather data including wind, waves, and temperature.

Oikolab provides over 70 years of global hourly historical and forecast weather data sourced from NOAA and ECMWF, making it ideal for climate research, energy modeling, and machine learning datasets.

Open-Meteo is a completely free and open-source weather API for non-commercial use that provides hourly and daily forecasts, historical data, and climate projections for any location worldwide without requiring an API key.

openSenseMap is an open-source platform that aggregates real-time sensor data from community-operated personal weather stations called senseBoxes, spread across the globe.

OpenUV provides real-time UV Index forecasts for any location on Earth, helping you understand sun exposure risks.

OpenWeatherMap is one of the most popular weather APIs, providing current conditions, forecasts, and historical data for millions of locations worldwide.

QWeather delivers accurate location-based weather data including real-time conditions, hourly and daily forecasts, air quality index, and severe weather warnings across global locations.

RainViewer provides radar imagery and rain map tile data collected from weather radar stations around the world, with no API key required.

Storm Glass provides detailed marine and weather forecasts combining data from multiple global meteorological sources such as NOAA, SMHI, and the Norwegian Meteorological Institute.

Tomorrow.io (formerly ClimaCell) is an advanced weather API powered by proprietary sensing technology that combines satellite, radar, and on-the-ground sensors for hyper-accurate forecasts.

The US Weather API is the official National Weather Service (NWS) REST API provided by the US government, offering free and unlimited access to forecasts, alerts, and observation data for the United States.

Visual Crossing offers comprehensive historical weather data, current conditions, and forecasts for any location worldwide, making it particularly valuable for data analysis and building weather-driven insights.

weather-api is a lightweight, open-source RESTful API that provides current weather data for cities around the world with no authentication required.

WeatherAPI is a feature-rich weather platform that delivers real-time weather, 14-day forecasts, historical data, and extras like astronomy data (sunrise/sunset, moon phases) and geolocation lookups.

Weatherbit is a professional-grade weather API offering current observations, hourly and daily forecasts, historical weather, and severe weather alerts sourced from global meteorological stations.

Yandex.Weather API provides detailed weather condition assessments for specific geographic locations using Yandex's meteorological data infrastructure, with particularly strong coverage across Russia and CIS countries.