Open-Meteo

The Open-Meteo replica implements the forecast and geocoding endpoints of Open-Meteo’s v1 API. Weather comes from a synthetic climate for each seeded place, driven by the world’s simulated clock. Its key is open-meteo.

Connect

Variable	Value
`OPEN_METEO_API_URL`	Base URL for `/v1/forecast`.
`OPEN_METEO_GEOCODING_URL`	Base URL for `/v1/search`. The real service hosts geocoding separately; the replica serves both from one URL.

Open-Meteo needs no key. ancha connect open-meteo has no snippet in 0.1.1; call the API directly:

Node

const url = new URL(process.env.OPEN_METEO_API_URL.replace(/\/+$/, '') + '/v1/forecast');
url.search = new URLSearchParams({ latitude: '37.77', longitude: '-122.42', current: 'temperature_2m,wind_speed_10m' });
const forecast = await (await fetch(url)).json();

Endpoints

Method	Path	Behavior
`GET`	`/v1/forecast`	Current, hourly and daily variables for one location. The nearest seeded place answers for any coordinate.
`GET`	`/v1/search`	Places by name, from the seeded places only.

Both are partial. Units are metric and times are ISO 8601. Daily variables need timezone (auto or an IANA name), as on the real API; without it the request fails with HTTP 400. Forecasts reach 16 days ahead and 7 days back. Historical archives and marine and air-quality data are not implemented and return HTTP 501 with x-ancha-gap: 1.

Starter data

The open-meteo-starter dataset has ten places, each with its own climate:

Place	ID	Country	Time zone
San Francisco	`5391959`	United States	America/Los_Angeles
New York	`5128581`	United States	America/New_York
London	`2643743`	United Kingdom	Europe/London
Berlin	`2950159`	Germany	Europe/Berlin
Tokyo	`1850147`	Japan	Asia/Tokyo
Sydney	`2147714`	Australia	Australia/Sydney
Portland	`5746545`	United States	America/Los_Angeles
Chicago	`4887398`	United States	America/Chicago
Toronto	`6167865`	Canada	America/Toronto
Singapore	`1880252`	Singapore	Asia/Singapore

Checks

Open-Meteo is read-only and has no state checks. Use trace checks, for example { called: "GET /v1/forecast" }.

Limits

One location per request.
Synthetic weather; it does not match real observations.
Open-Meteo is not part of a preset. Add it with --tools open-meteo or twins: [open-meteo].

Get started

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Connect

Endpoints

Starter data

Checks

Limits

​Connect

​Endpoints

​Starter data

​Checks

​Limits

Connect

Endpoints

Starter data

Checks

Limits