Abstract: Air pollution is a major global environmental and health concern due to rising levels of particulate matter and harmful gases. These pollutants cause serious respiratory and cardiovascular diseases. Conventional air purifiers depend on grid electricity, increasing cost and indirect pollution. This project proposes a Solar Air Purifier with an AQI Monitoring System. A solar panel generates energy, stored in a battery via a charge controller. The system powers a DC fan and a multi-stage filtration unit. It includes a pre-filter, HEPA filter, and activated carbon filter. The HEPA filter removes fine particles with high efficiency, while the carbon filter removes gases and odors. An air quality sensor monitors pollution levels and displays real-time AQI on an LCD. The system is eco-friendly, cost-effective, and suitable for various environments. Experimental results show improved air quality, making it a sustainable solution for healthier living.

Keywords: Solar Air Purifier, Air Quality Index (AQI), Renewable Energy, HEPA Filtration, Activated Carbon Filter, Air Pollution Control and Environmental Monitoring

Downloads: | DOI: 10.17148/IARJSET.2026.133115