The paper is dedicated to the measurement and analysis of real-time levels of poisonous gases for the safety of employees working in hazardous environments. The project suggests an IoT-based system that measures humidity, temperature, and levels of different gases, monitoring the dynamic changes in the parameters in real-time. If any of the levels cross the pre-installed safety levels, a warning is issued to the authorized personnel through connected mobile devices, even when they are remotely located. The system also includes live video streaming to ensure real-time observation of any possible blockages or obstructions, ensuring additional safety and surveillance.