SENSurAir Private Limited develops low-cost air quality monitoring and personal exposure monitoring solutions. We use the Internet of Things (IoT) and Machine Learning to add value to the customers.We aim to democratise air quality data and make it accessible to the public, enabling them to make better decisions and create a better environment. SENSurAir Private Limited is a startup incubated at IIT Madras and incorporated in 2021 under the Companies Act, 2013. We are funded by IITM Pravartak Technologies Foundation, funded by the Department of Science and Technology, Government of India, under its National Mission on Interdisciplinary Cyber-Physical Systems and hosted as a Technology Innovation Hub (TIH) by IIT Madras. We develop affordable air quality & noise monitoring devices, and novel particulate measuring devices. Our sensor devices leverage IoT, cloud computing and data analytics to measure air quality in various environments. This sensor network uses IoT, where sensors will be deployed in high density across the city to understand air pollution's spatial and temporal variation. These devices can reduce the cost by 10 times compared to the conventional methods.