Abstract: It is evident that individuals spend a large part of their time indoors, especially in work and study environments. In artificially air-conditioned places, the concentration of atmospheric pollutants is influenced by internal and external emissions. Therefore, it is crucial not to underestimate the importance of understanding indoor air quality and its associated parameters, as neglecting this issue can present risks to health and efficiency in the workplace. From this perspective, the main objective of this study is to investigate Indoor Air Quality (IAQ) by monitoring PM (PTS, 2.5 and 10), CO2, bioaerosols and thermal comfort parameters (air velocity, temperature and humidity) in a computer laboratory and in a chemical and physical analysis laboratory of a Higher Education Institution (HEI) that use artificial ventilation. To monitor bioaerosols, an Andersen CF-6 impactor and petri dishes prepared with Potato Dextrose Agar (PDA) and Chloramphenicol (antibiotic) were used. The petri dishes were subjected to growth in an oven. Particulates and CO2 were monitored using continuous monitors, ECOPM and Aeroqual, respectively. Air velocity and temperature were measured using an anemometer at different points in the environments of interest. The results revealed that air quality and thermal comfort parameters showed variations in the two environments analyzed. When comparing the data obtained with current IAQ standards, non-conformity was observed in both aspects, among them it is possible to highlight the air velocity that was greater than 0.20 m/s, the CO2 concentration that exceeded 1000 ppm and bioaerosols that presented values greater than 750 cfu/m3. This study contributes valuable information that enables the implementation of practices aimed at improving air quality in indoor environments. As an improvement strategy, the adequacy of the general dilution ventilation system used in the environments stands out, since the current system was insufficient to ensure compliance with air quality standards, thermal comfort and, in general, people’s well-being.

Keywords: Indoor air quality, thermal comfort, environmental monitoring.