PlanetWatch, a CERN spin-off, aims to provide a solution to generate, validate, analyse and record air quality data. Their environmental sensor uses the CERN technology C2MON, a modular Java framework for large-scale industrial monitoring and control. In 2020, PlanetWatch announced the activation of over 100 sensors in Milan and Taranto (Italy). With 1.2 million euros in funding awarded by the Algorand Foundation, PlanetWatch will help detect local air pollution peaks and identify local air pollution triggers. PlanetWatch has also partnered with Terabee, a fellow CERN spin-off at INNOGEX, to provide air monitor sensors that could help reduce the risk of COVID-19 infection.