Air pollution is a growing health threat in India, affecting both outdoor and indoor air quality. This guide explains what AQI is, how it impacts health, and why indoor air can be more polluted than outdoor air. It offers practical, science-backed steps to reduce AQI at home; through better ventilation, indoor plants, air purifiers, dust control, smoke reduction, and eco-friendly cleaning. The article also highlights community-level actions like planting native trees, avoiding waste burning, reducing vehicle pollution, and controlling construction dust. A simple 7-day action plan helps readers create a healthier, low-AQI environment for improved breathing, sleep, and overall well-being.