Aviation Weather
Aviation Weather MCP Server
Aviation weather briefings directly in Claude. METARs, TAFs, PIREPs, SIGMETs, and ICON-D2 NWP forecasts — no API key required.
Just ask Claude things like:
- "METAR EDDM"
- "Preflight briefing EDLI"
- "Route weather EDDM to LOWI"
- "Any SIGMETs over Germany?"
Prerequisites
You need two things installed:
- Claude Desktop — download from https://claude.ai/download
- Node.js (version 18 or later) — download from https://nodejs.org (pick the LTS version)
To check if Node.js is already installed, open Terminal (Mac) or Command Prompt (Windows) and type:
node --version
If you see a version number like v22.x.x, you're good to go.
Setup (3 minutes)
Step 1: Open the Claude Desktop config
- Open Claude Desktop
- Click the gear icon (top right) to open Settings
- Go to Developer
- Click Edit Config
This opens a JSON file in your text editor.
Step 2: Add the weather server
If the file is empty or just has {}, replace it with:
{
"mcpServers": {
"aviation-weather": {
"command": "npx",
"args": ["-y", "aviation-weather-mcp"]
}
}
}
If the file already has content (e.g. other MCP servers), add the "aviation-weather" block inside the existing "mcpServers" section.
Step 3: Restart Claude Desktop
Quit Claude Desktop completely and reopen it. The first start may take 10-15 seconds longer while it downloads the weather server.
Step 4: Test it
Start a new chat and ask: "METAR EDDF"
Claude should respond with the current weather at Frankfurt airport. If it works, you're all set!
What can it do?
| Ask Claude... | What it does |
|---|---|
| "METAR EDDM" | Current weather at Munich airport |
| "TAF EDDF" | Forecast for Frankfurt |
| "Preflight briefing EDLI" | Full VFR brief: METAR + TAF + NWP forecast |
| "Route weather EDDM to LOWI" | Weather along a direct route (METARs + NWP + SIGMETs) |
| "Any PIREPs near EDDK?" | Recent pilot reports near Cologne |
| "SIGMETs over Germany" | Active significant weather warnings |
| "Hourly forecast for 48.14, 11.57" | ICON-D2 NWP model data for any coordinates |
Data Sources
- aviationweather.gov — METARs, TAFs, PIREPs, SIGMETs (FAA/NOAA, worldwide)
- Open-Meteo — ICON-D2 / ICON-EU NWP forecasts (DWD models)
Notes
- Works worldwide for METARs, TAFs, PIREPs, and SIGMETs
- ICON-D2 high-resolution forecasts (2km) cover Central Europe (43-58°N / 4-21°E, 48h horizon)
- Outside Central Europe, it falls back to ICON-EU (7km resolution, 120h horizon)
- ICAO codes are resolved automatically — just use the 4-letter code
- Visibility is reported in km
Usage with Claude Code
claude mcp add aviation-weather -- npx -y aviation-weather-mcp
Troubleshooting
Claude doesn't show weather tools: Make sure you restarted Claude Desktop after editing the config. Check that the JSON syntax is valid (no trailing commas, matching brackets).
"npx: command not found": Node.js is not installed or not in your PATH. Download it from https://nodejs.org.
Slow first start: The first time, npx downloads the package (~30KB). After that it's cached and starts instantly.
Disclaimer
This tool is for informational purposes only and is not a replacement for an official pre-flight weather briefing. Always use approved weather services and follow your national aviation authority's requirements for flight preparation.
License
MIT
Server Config
{
"mcpServers": {
"aviation-weather": {
"command": "npx",
"args": [
"-y",
"aviation-weather-mcp"
]
}
}
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