As smart buildings become increasingly connected, indoor air quality (IAQ) has evolved from a basic facility management concern into a strategic priority. In 2026, organizations are investing in intelligent air quality monitoring systems not only to improve occupant health but also to enhance energy efficiency, meet sustainability goals, and support data-driven building management. Advancements in IoT, artificial intelligence (AI), edge computing, and cloud-based analytics are transforming how commercial buildings, healthcare facilities, educational institutions, industrial plants, and public infrastructure monitor and optimize indoor environments.