Filling the Indoor Air Quality Data Gap: Research Challenges and Opportunities

The rapid growth in the use of low-cost sensors for indoor air quality (IAQ) measurement campaigns, following the COVID-19 pandemic, has significantly improved public awareness of ventilation and IAQ in buildings. Yet, we still know very little about the level of pollutants in our indoor environments. Unlike outdoor air, IAQ is not routinely actively monitored and there are currently no widely accepted, standardised methodologies, procedures or regulations for doing so.