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Classroom Purifiers: A Band-Aid on Delhi's Air Pollution Crisis?
20 Dec, 2025
Summary
- Purifiers offer partial protection by reducing indoor exposure during school hours.
- Long-term evidence on lung growth and permanent protection from purifiers is limited.
- Proper maintenance and filter replacement are critical for purifier effectiveness.
The Delhi government's initiative to install air purifiers in 38,000 school classrooms aims to reduce children's exposure to fine particles during school hours. These HEPA purifiers can significantly lower indoor pollution levels, offering partial protection by improving air quality within the enclosed spaces. However, this measure does not address the pollution children encounter during commutes, outdoor play, or at home, meaning overall exposure is only partially mitigated.
