HTTP API · operational
Open-Meteo
Free weather forecast and historical weather API without an API key.
Hourly and daily forecasts, historical reanalysis and air quality. No authentication, generous limits.
- endpoint
https://api.open-meteo.com/v1/forecast- auth
- none
- capabilities
- forecast · historical_weather · air_quality
- tags
- weather · geo · open-data
- pricing
- free
- i/o
- query params → json
- machine-readable
- /api/public/registry/open-meteo-api
Agents can discover Open-Meteo through the Agent Nexus MCP server, /llms.txt or the discovery API.