Air quality is one of the challenges to public health. Poor air quality is caused by the presence of air pollutants. WHO mentions particulate matter (PM) as one of the main pollutants. These pollutants have varied toxicity that can threaten public health. This study aims to measure PM pollutants. This study is an effort to monitor and improve air quality in the workplace. This study falls into the descriptive category, with a focus on detailing the levels of PM2.5 and PM10. The research design chosen was cross-sectional. The quantitative data collected shows the concentration of PM collected on filter paper. Sampling was carried out at six points (environmental health laboratory, radiochemistry laboratory, basement, sauna, facilities for Technologically Enhanced Natural Radioactive Material (TENORM) testing, and a parking lot) at the Indonesian National Nuclear Energy Agency by grab sampling. Air sample measurements were carried out using the direct method using the DustTrak DRX-8533 TSI tool with an MCE filter. The overall measurement results of PM concentrations exceeded the established quality standards. The highest concentrations of PM10 and PM2.5 were 18.24 mg/m 3 outdoors. This can occur due to anthropogenic activities such as various human, household, and machine activities. Exposure to PM can cause respiratory problems (clinical codification category J00-J06 and its derivatives). Several ways can be done such as cleaning the office workspace in the morning and evening using a wet mop or vacuum pump. Air quality in the workplace needs to be monitored to create a healthy work environment and health.