Most consumer purifiers only treat indoor air, but people spend
significant time outdoors in streets, parks, construction zones, and
public spaces. According to the World Air Quality Report 2023 and
State of Global Air 2024, Per the
IQAir World Air Quality Report 2023, 83 of the world's 100 most polluted cities are in India, with
outdoor PM2.5 levels routinely more than 10x above the
WHO's annual safe guideline
— a gap no indoor solution can close.