The concept of a Digital Twin is being discussed in this text, where a digital representation of a physical thing is created to simulate its performance and make adjustments virtually. In the context of IoT, integrating external data sources can enhance the accuracy and usefulness of IoT data by validating it, giving a larger context, or augmenting its capabilities. The author shares an example of how they used publicly available real-time datasets from the National Weather Service observation stations to correlate with their own sensor data in InfluxDB Cloud, demonstrating the potential benefits of combining external data sources with IoT data. The possibilities for using such external data sources are nearly limitless, and the author is planning to explore further integration with Telegraf plugins to simplify the process.