Weather Forecast Application

Ruby-based console application for retrieving and displaying weather forecasts and climate data via the World Weather Organization (WMO) API.

Description

This application requests weather data for a selected city, processes the JSON response, and outputs information about tomorrow's temperature forecast and average monthly climate indicators in a readable format.

Features

• Retrieve tomorrow's weather forecast (minimum and maximum temperature)
• Display average monthly temperature for the current month
• Console output with formatted data

Technologies Used

• Ruby 3.4.5 - Primary programming language
• WMO API - Weather data source from World Weather Organization

Skills Demonstrated

1. HTTP Request Handling

• Using Net::HTTP module to send GET requests
• URI parsing with URI.parse
• Working with external APIs

2. JSON Processing

• Parsing JSON responses from API
• Navigating nested data structures
• Extracting specific data from complex objects

3. Date Operations

• Using Date and DateTime libraries
• Date formatting and manipulation
• Current month determination

4. External API Integration

• Integration with public WMO API
• Extracting necessary data from structured API responses
• Error handling for network requests

5. Data Processing

• Data extraction and formatting
• String interpolation
• Console output formatting

Usage

ruby weather_json.rb

Requirements

• Ruby 3.x or higher
• Internet connection for API access

Project Structure

pogoda_json/

├── pogoda_json.rb # Main application file

├── city_list.txt # List of available cities with IDs

├── .gitignore # Git ignore rules

└── README.md # Project documentation

Example Output

City: Kharkiv

Temperature tomorrow from 5 °C to 12 °C

Average monthly temperature from 3 °C to 10 °C

Technical Implementation Details

The application demonstrates:

• RESTful API consumption
• JSON data parsing and manipulation
• Date/time operations in Ruby
• String formatting and interpolation
• Ruby standard library usage (net/http, uri, json, date)

API Reference

This application uses the World Weather Organization API:

• Base URL: https://worldweather.wmo.int/en/json/
• Response Format: JSON
• Data Includes: Current forecasts, climate data, temperature ranges