The WhatsApp weather bot is a Python-based application that integrates with the Twilio WhatsApp API, OpenWeather API, and Django to provide users with current weather updates and forecasts for their location. The bot is built using Twilio's WhatsApp sandbox, which allows it to receive and respond to messages from users. The bot uses the OpenWeather API to fetch weather data and generates a formatted response based on the user's input. The application also includes features such as location-based messaging and error handling. By following this tutorial, users can build their own WhatsApp weather bot using Python, Django, and Twilio.