<p>Air quality is a crucial factor in determining the quality of the prevailing environment. Indoor air affects outdoor air quality just as outdoor air affects indoor air quality. To avoid the adverse effects of poor air quality, it is essential to maintain the quality of the air on both sides. It helps in maintaining the efficiency of both the teachers and students in an educational institute. This study aims to monitor particulate matter (PM_2.5 and PM₁₀) concentration in four different types of classrooms, three canteens, three reading rooms, six lawns, and four corridors located in and around the Faculty of Engineering and Technology, Jamia Millia Islamia. The concentration of PM_2.5 and PM₁₀ has been monitored continuously for 8&#xa0;h at a ten-minute interval for three consecutive days (two working and one non-working) at each site. Indoor air quality for classrooms, reading rooms, and canteens has been monitored simultaneously with the immediate outdoor environment with two different devices. The data collected has been used to make assessments and to understand the temporal variation of particulate matter at each site. The particulate matter (PM_2.5 and PM₁₀) concentration for indoor sites decreases as the day progresses. Similar trends have been observed for outdoor sites. The canteens have the highest concentration of particulate matter, and classrooms with A.C. have the lowest concentrations. Most of the sites have a particulate matter concentration higher than the WHO limit.</p>