An edge-to-cloud environmental monitoring project using a Raspberry Pi and Enviro+ sensor to stream high-resolution weather data directly to cloud storage in Parquet format. It leverages client-side tools like DuckDB and Evidence for real-time analysis and visualization ... no backend servers, no data loss, and fully resilient offline operation. This experiment explores energy-efficient, open, and scalable approaches to cloud-native IoT architectures. https://opensensor.space