An indoor air quality assessment is a structured, evidence-based review of how a building performs for the people inside it. Unlike a one-off spot reading, an assessment combines continuous measurement, fabric and ventilation inspection, and occupancy context into a single defensible picture.
Core measured parameters include carbon dioxide as a proxy for ventilation effectiveness, PM2.5 and PM10 for particulate exposure, total VOCs and formaldehyde where materials or processes warrant, plus temperature and humidity for occupant comfort. Where regulatory or insurance defensibility is required, sorbent-tube sampling and laboratory analysis are added.
A complete indoor environmental assessment goes further — capturing thermal comfort, lighting and acoustics alongside air quality so the report addresses the full occupant experience, not a single parameter in isolation.