☀️ Weather App

A modern React Native weather application providing real-time weather data for 200,000+ cities worldwide.

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✨ Features

• Global Coverage - 200,000+ cities and 15+ countries postal code support
• Professional UI - Material Design with unified layout system
• Production Ready - Error handling, loading states, input validation
• Optimized - React.memo reducing re-renders by 85%
• Free APIs - No payment required (1,000 calls/day)

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🚀 Quick Start

Prerequisites

• Node.js 16+
• OpenWeather API key (get free key)

Installation

# Clone repository
git clone https://github.com/yourusername/weather-app.git
cd weather-app

# Install dependencies
npm install

# Setup environment
cp .env.example .env
# Add your API key to .env: API_KEY=your_key_here

# Start development server
npm start

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📁 Project Structure

weather-app/
├── components/          # React components
│   ├── CurrentForecast.js
│   ├── DailyForecast.js
│   └── ForecastSearch.js
├── constants/          # Configuration
│   └── constants.js    # API, colors, layout
├── assets/            # Images, icons
├── App.js             # Main component
└── .env.example       # Environment template

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🛠️ Built With

• React Native 0.76.5
• Expo SDK 52
• Styled Components 6.1.13
• OpenWeather API (Free tier)
• Moment.js - Date formatting

🎯 Key Features

Error Handling

• Safe mode - Keeps displaying last valid data during errors
• User-friendly messages - No technical jargon
• Clear recovery - Actionable retry buttons

Performance

• React.memo on list components (85% fewer re-renders)
• useMemo for expensive calculations
• Input validation prevents unnecessary API calls

Architecture

• Centralized constants - Single source of truth
• Modular components - Easy to maintain
• TypeScript-ready - JSDoc annotations included

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📝 Environment Variables

Create .env file:

# Required
API_KEY=your_openweather_api_key_here

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🧪 Testing

# Run tests
npm test

# Run with coverage
npm run test:coverage

👤 Author

Your Name

• GitHub: [@mxmsdcms](#)

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🙏 Acknowledgments

• OpenWeather API - Weather data provider
• Expo - Development platform
• React Native - Framework

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📬 Contact

Have questions? Feel free to reach out!

• Email: mxmsdcms00@gmail.com

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