Indoor air quality (IAQ) has been a critical matter of concern for public health, environmental, and government agencies over the years due to its negative influence on building occupants. The outcomes of degraded air quality levels have been a challenge not just for developing countries; it puts the potential burden of disease on developed nations. Healthcare cost in the United States is reported to be $150 billion because of air pollution-related consequences. Furthermore, increased air pollutants exposure causes 412,000 premature deaths in Europe each year. Therefore, the research communities are expected to work actively to find potential solutions to IAQ assessment and management. Fortunately, the latest technologies such as the Internet of Things and Artificial Intelligence show great potential in developing smart environments that permit real-time assessment of IAQ levels from building premises. Such systems can be useful to create healthy living conditions in residential and commercial buildings while promising enhanced outcomes for public health management. This chapter provides conclusive thoughts on how IAQ assessment plays an essential role in building smart environments while throwing light on the effective utilization of emerging technologies to create healthy living environments. Along with the summary of potential contributions made by various field experts to address challenges in this problem domain, this chapter also provides insights into future scopes in IAQ assessment for smart environments.