Weather Union MCP Server

A Model Context Protocol (MCP) server that provides weather data and air quality information using the Weather Union API.

This server offers real-time weather data for specific coordinates or predefined Indian cities.

Available Tools

The MCP server provides two powerful weather tools:

1. get_current_weather

Get current weather data for any geographic location using latitude and longitude coordinates.

Parameters:

• latitude (float): Latitude coordinate (-90 to 90 degrees)
• longitude (float): Longitude coordinate (-180 to 180 degrees)

Returns: Comprehensive weather information including temperature, humidity, wind conditions, precipitation, and air quality data.

Example:

get_current_weather(12.933756, 77.625825)  # Bangalore coordinates

2. get_weather_for_city

Get weather data for major Indian cities using predefined city names.

Parameters:

• city_name (str): Name of the city (case-insensitive)
• country_code (str, optional): Country code (default: "IN")

Supported Cities:

• Bangalore, Mumbai, Delhi, Hyderabad, Chennai
• Kolkata, Pune, Ahmedabad, Jaipur, Lucknow

Example:

get_weather_for_city("bangalore")
get_weather_for_city("Mumbai")

Weather Data Format

The server returns comprehensive weather information in a formatted string:

Weather Information (Lat: 12.933756, Lon: 77.625825):

Temperature: 25.68°C
Humidity: 25.81%
Wind Speed: 1.15 km/h
Wind Direction: 331.2°
Rain Intensity: 0 mm/h
Rain Accumulation: 0.4 mm
Air Quality Index (PM 2.5): 84
Air Quality Index (PM 10): 75

API Key

You need a Weather Union API key (X-Zomato-Api-Key) to use this server. You can generate this for free by signing up at Weather Union.

• The server validates your API key on startup
• API key must be set as an environment variable
• The server will show clear error messages if the API key is missing or invalid

Contributing

Contributions are welcome! Please feel free to submit issues, feature requests, or pull requests.

License

This project is licensed under the MIT License - see the LICENSE file for details.

Usage with MCP Clients

Claude Desktop

Add to your Claude Desktop configuration:

{
  "mcpServers": {
    "weather-union": {
      "command": "uvx",
      "args": ["weatherunion-mcp"],
      "env": {
        "WEATHER_UNION_API_KEY": "your-api-key-here"
      }
    }
  }
}

Other MCP Clients

The server follows standard MCP protocol and works with any compliant MCP client.

Quick Start

1. Set up your API key:

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   export WEATHER_UNION_API_KEY='your-api-key-here'

2. Run the server:

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   # For MCP clients (default - uses stdin)
   python weatherunion_mcp/server.py
   
   # For testing with HTTP
   python weatherunion_mcp/server.py --http --port 8000