Build Weather Forecasting Web App from Documentation

I have complete project documentation for a Weather Forecasting Web Application. I need a developer to build the full working app according to the documentation.

The app should be developed using:

HTML
CSS
Vanilla JavaScript
OpenWeather API integration

Required features:

City/location search
Current weather display
Temperature, humidity, wind speed, pressure, visibility
Air Quality Index
Sunrise and sunset time
Hourly forecast
5-day forecast
Responsive design for mobile, tablet, and desktop
Clean UI matching the documentation screenshots
Error handling for invalid city/API/network issues
Proper file structure
Ready-to-run source code

Important:
I only have documentation. I need complete coding and implementation based on it.

Deliverables:

Complete source code
Working weather app
Setup instructions
API key configuration guidance
Responsive design
Bug-free final version