---
title: Get Weather
description: Fetch current temperature and forecast data for coordinates
---

## Installation

Start in a ChatJS app with `chat.config.ts` and `components.json`.
No API key is configured by this item. It calls the Open-Meteo forecast endpoint.

```bash
npx @chat-js/cli@latest add get-weather
```

The command installs the server tool, renderer, and registration descriptor under
`tools/chatjs/get-weather/`, along with required dependencies and shared renderer
helpers. It then regenerates the app's tool registrations.

## Usage

Ask your chat model: “Get the weather at latitude 51.5074, longitude -0.1278.” Use a model that supports tool calling.

The tool accepts numeric `latitude` and `longitude` values. It requests current
temperature, hourly temperatures, and daily sunrise and sunset times, with
the timezone determined by the provider.

## Behavior and limitations

This item does not geocode place names. Supply coordinates when verifying it.
The implementation forwards provider JSON without runtime response validation.

## Customize

Edit the installed `tool.ts` and `renderer.tsx` to change behavior or presentation.
See [Installation](./install) for updates and sync, and
[Authoring Tools](./authoring) to publish your own item.