An indoor air monitor is a smart device designed to measure and track the quality of the air inside homes, offices, or other indoor spaces. It detects key pollutants such as carbon dioxide (CO₂), particulate matter (PM2.5), volatile organic compounds (VOCs), temperature, and humidity to ensure a healthy living environment. Equipped with real-time sensors and digital displays, it provides instant readings and alerts when air quality drops below safe levels. Many modern air monitors connect to smartphones via apps, allowing users to monitor air quality remotely and take timely action. Compact and user-friendly, it helps promote cleaner, safer, and more comfortable indoor air.