Nowadays indoor air quality (IAQ) plays an extremely important role, as people tend to spend more and more time inside buildings. IAQ is one of the basic factors in user comfort, directly influencing their health and well-being.

The IAQ was evaluated at a day care center and a health questionnaire was applied to the older adult. IBM SPSS Statistic software, version 25.0 was used for data processing.

The average concentrations of some environmental parameters were found to exceed the legislated values. The most prevalent symptoms were headaches, itching, eye irritation, and dizziness. It was found that there was lack of ventilation.

Good air quality in day center is critical to the health of the older adult. Measures should be promoted to reduce the concentration of pollutants in the building.