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MeteoSwiss MCP Server

answering

MeteoSwiss MCP Server is answering right now. Last checked 8 min ago. 150 installs a week from npm. It exposes 7 tools. Last commit 31 Oct 2026.

Swiss weather data for AI assistants — forecasts, measurements, stations, pollen.

Installs per day peak 251 · avg 21 · -32% w/w
a month agotoday
Uptime history 91 days of history · worst day 62%
91 days agonow
100.0%
Uptime 24h
91 of 91 checks
7
Tools
read from the server
163 ms
Response time
average over 24h
150
Installs / week
npm and PyPI

What changed 5

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 11 September 2026. No other catalogue keeps this.

20 Oct a tool changed version
11 Oct a tool changed version2 times that day
11 Sep a tool changed version2 times that day
and 2 more, back to 11 September 2026

What the code does

We read the source, 1 d ago · tools taken from the live server · rules 995398eba69f

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Touches key and credential files packages/meteoswiss-mcp/Dockerfile:22
COPY pnpm-lock.yaml pnpm-workspace.yaml .npmrc package.json ./
In the project's build, not in the package

Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.

Image runs as root .devcontainer/Dockerfile:91
USER root

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.

run in your terminal
claude mcp add meteoswiss-mcp --transport http https://meteoswiss-mcp.ars.is/mcp
Settings → Connectors → Add custom connector, then paste this address
https://meteoswiss-mcp.ars.is/mcp
~/.codex/config.toml
[mcp_servers.meteoswiss-mcp]
url = "https://meteoswiss-mcp.ars.is/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "meteoswiss-mcp": {
      "url": "https://meteoswiss-mcp.ars.is/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "meteoswiss-mcp": {
      "type": "http",
      "url": "https://meteoswiss-mcp.ars.is/mcp"
    }
  }
}

Available tools 7

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

fetch
fetch
Fetch full content from a MeteoSwiss webpage and convert to markdown or plain text. Use the search tool first to discover valid page URLs, then pass the full URL as the id parameter.
meteoswissclimatedata
meteoswissClimateData
Get homogeneous climate measurement series from Switzerland's National Basic Climatic Network (NBCN). Returns temperature, precipitation, sunshine, radiation, wind, pressure, and climate indicators (frost days, summer days, heat days) going back decades. 29 climate stations + 46 precipitation stations with daily, monthly, and yearly resolution. Use cases: "What are typical January temperatures in Zurich?", "How has precipitation changed in Basel over 50 years?", "How many heat days did Lugano have last year?" Accepts station names ("Zurich", "Basel"), abbreviations ("SMA", "BAS"), or WGS84 coordinates.
meteoswisscurrentweather
meteoswissCurrentWeather
Get real-time weather measurements from ~300 Swiss automatic weather stations (~160 full weather + ~140 precipitation-only). Returns temperature, precipitation, wind, humidity, pressure, sunshine, and more. Data updates every 10 minutes. Precipitation-only stations return only rainfall data. For 8 stations (Zurich, Basel, Chur, Sion, Altdorf, Säntis, Jungfraujoch, Grand St-Bernard), also includes daily visual observations: cloud cover, fog, rain, snowfall, hail, and snow coverage. Accepts station names ("Zurich"), abbreviations ("SMA"), addresses ("Bahnhofplatz 1 Bern"), or WGS84 coordinates. Automatically finds the nearest station.
meteoswisslocalforecast
meteoswissLocalForecast
Get a multi-day weather forecast for any Swiss location. Returns daily summaries (temperature, precipitation, sunshine, wind, weather icon) plus a hierarchical hourly breakdown of every series. This uses official MeteoSwiss Open Data — the same forecasts powering the MeteoSwiss app and website. Accepts: - Postal codes: "8001" (Zurich), "3000" (Bern), "1200" (Geneva) - Station abbreviations: "SMA" (Zurich Fluntern), "BER" (Bern) - Place names: "Zurich", "Basel", "Lugano" Coverage: ~6000 Swiss locations (all postal codes + weather stations + mountain points). Forecast horizon: up to 9 days. Updated hourly. Each day's summary fields: temperature_min_c, temperature_max_c, precipitation_total_mm, sunshine_total_minutes, wind_avg_kmh, wind_gust_max_kmh, weather, weather_icon_url. Each day also includes "hourly": one array of per-hour objects covering every series together — { time, temperature_c, precip_mm, sunshine_minutes, wind_kmh, wind_gust_kmh } — useful for judging *when* rain, sun, or wind is expected, not just the daily summary: - Each entry's "time" is already local wall-clock time for the location (Europe/Zurich), with the UTC offset included, e.g. "2026-07-09T14:00:00+02:00". It is NOT UTC — do not convert it. - A dry/calm/sunless hour is reported as its measured value (often 0), not omitted. A fully dry day is still a full array of zero-precipitation hours, not an empty array. - Each field is independently null if just THAT series has no reading for a given hour — the other fields for that same hour are still populated. An hour is omitted entirely only when every series is missing for it. - "hourly" itself is null when no hourly breakdown exists for this location at all (a total data gap); [] only when this location supports hourly data but none was available for that specific day. - For weather stations, temperature_min_c/temperature_max_c/precipitation_total_mm are MeteoSwiss's own official daily aggregates — a different, separately-curated product from the hourly series shown alongside them. They can legitimately NOT match summing/ averaging the hourly entries for that day; this is expected, not a data error. sunshine_total_minutes/wind_avg_kmh/wind_gust_max_kmh have no official daily product for stations and are always derived from the hourly series. For postal codes/mountain points, every summary field is derived from the same hourly series shown alongside it, so it always matches summing/averaging that series exactly.
meteoswisspollendata
meteoswissPollenData
Get current pollen concentration data from MeteoSwiss monitoring stations (~15 stations across Switzerland). Shows pollen levels for 7 measured species (alder, birch, hazel, beech, ash, oak, grasses) — each is always included, with a "no-current-data" status when out of season. Ambrosia (ragweed) is a MeteoSwiss forecast-only category and is not part of this OGD measurement network, so it is not included. Useful for allergy sufferers.
meteoswissstations
meteoswissStations
List and search MeteoSwiss measurement stations. Filter by name, canton, or browse the full network of ~300 stations (~160 full weather + ~140 precipitation-only) across Switzerland.
search
search
Search MeteoSwiss website content in multiple languages (DE, FR, IT, EN). Returns relevant pages with URLs that can be passed to the fetch tool. Always returns up to 10 results per page — the upstream API has a fixed page size that cannot be changed. Note: pagination may return duplicate results across pages (upstream API limitation).

Endpoints

URLTransportStateLatencyChecked
https://meteoswiss-mcp.ars.is/mcp streamable-http answering 107 ms 8 min ago

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MeteoSwiss MCP Server — questions

Answers built from our own checks of this server.

What can MeteoSwiss MCP Server do?
It exposes 7 tools, read directly from the server on our last check. Among them: fetch, meteoswissClimateData, meteoswissCurrentWeather, meteoswissLocalForecast, meteoswissPollenData, meteoswissStations and 1 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is MeteoSwiss MCP Server working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 163 ms. The bar chart above shows every period we have measured.
How do I connect MeteoSwiss MCP Server?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does MeteoSwiss MCP Server need an API key?
No. MeteoSwiss MCP Server completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 7 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is MeteoSwiss MCP Server?
It answers our handshake in 163 ms on average, which is faster than 80% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use MeteoSwiss MCP Server?
The npm package meteoswiss-mcp was installed 150 times in the last week. Week over week that is -32%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is MeteoSwiss MCP Server open source?
The code is open source: it is published under the CC0-1.0 licence, written in HTML, 4 stars on GitHub and 3 open issues. The licence covers the code in the repository, not the hosted service at meteoswiss-mcp.ars.is, which runs on its operator's own terms.