Which set of measurements is included in an IAQ profile?

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Air quality and comfort in indoor spaces are assessed through ventilation, temperature, humidity, and CO2 levels. Airflow shows whether the space receives enough outdoor air to dilute contaminants. Temperature and relative humidity are key for thermal comfort and moisture control, influencing occupant well‑being and mold risk. Carbon dioxide serves as a practical proxy for ventilation effectiveness and occupancy patterns; high CO2 usually means insufficient outdoor air exchange. Together these measurements form the core of an IAQ profile because they directly reflect how well the space is ventilated and how comfortable occupants are. The other options mix in acoustics or lighting, which aren’t indicators of indoor air quality; visual moisture signs are qualitative, and bacteria counts or PM2.5 aren’t standard components of a routine IAQ profile.