What does indoor air quality refer to?

Indoor air quality primarily pertains to the cleanliness and safety of the air within buildings, which includes the presence of various contaminants. These contaminants can be biological (such as mold, bacteria, and dust mites), chemical (such as volatile organic compounds and other pollutants), or physical (like particulate matter). When assessing indoor air quality, it's essential to consider how these pollutants can affect the health and comfort of the occupants.

The other factors listed, such as temperature control, availability of natural light, and humidity levels, do indeed influence indoor environment conditions but do not directly define indoor air quality. While temperature and humidity can impact comfort and may affect the level of certain pollutants, they are separate aspects of a building's overall environment rather than direct indications of air quality. Therefore, understanding the quantity and types of contaminants in the air is crucial for evaluating and improving indoor air quality.