Weather & Environment
Open-Meteo is a fully free and open-source weather API that provides high-resolution global weather forecasts, historical weather data, and climate projections without requiring any API key for non-commercial use. Built on top of state-of-the-art numerical weather prediction (NWP) models from ECMWF, GFS, Meteo France, DWD, and other meteorological agencies, Open-Meteo delivers hourly and daily weather variables across the globe with up to 16-day forecast horizons and access to decades of historical weather records.
Open-Meteo API is verified for developer integrations in Nigeria and across African markets, providing documented endpoints, sandbox testing, and developer support.
None (no API key required)
10,000 requests/day (no key), commercial plans available
Developers, researchers, and students needing completely free, high-quality weather data without API key friction