Open-Meteo Elevation API

A high-performance REST API providing global digital elevation model data with 30-meter resolution via the SRTM and ASTER datasets.

The Open-Meteo Elevation API delivers precise altitude data for any coordinate on Earth using a 90-meter resolution global grid (SRTM) supplemented by 30-meter resolution ASTER data. It handles high-volume requests with sub-millisecond response times, making it ideal for flight path calculations, topographic mapping, and cycling route profiles. Developers can batch up to 100 locations in a single GET request, receiving instantaneous JSON responses without the overhead of API keys for non-commercial use. The service integrates seamlessly with the Open-Meteo weather suite to provide localized atmospheric pressure adjustments based on exact terrain height.

https://open-meteo.com/en/docs/elevation-api