Weatherunion MCP Server

A Model Context Protocol (MCP) server that provides weather data and air quality information using the Weather Union API. The weatherunion mcp mcp server wraps that behind the Model Context Protocol, so an assistant can use it rather than through you.

Adding it to your client

Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client. The configuration blocks on this page cover the common clients.

Configuration

You will need one environment variable: WEATHER_UNION_API_KEY. The server will not start without them, which is usually why the tools fail to appear on a first run. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.

When to reach for it

Among the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. It is maintained by junaidrahim; worth a glance at recent repository activity before you build anything load-bearing on it.

This entry was verified against Weatherunion MCP's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.

Caveats

• It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
• Missing credentials fail quietly in some clients — if no tools show up, check the environment block first.
• MCP clients confirm each tool call by default. Leave that on until you have watched what the weatherunion mcp mcp server does with a few real requests.