Safe air isn’t an impossible aim: Given the administrative will, here’s what could be done right away
India’s definition of ‘moderate,’ however, overlaps with what the WHO defines as unhealthy. Also, this implies that by its own definition, for 165 days, NCR residents are exposed to unhealthy to hazardous air. For comparison, the WHO guideline for short-term exposure to above-standard PM2.5 is set at 15 micrograms per cubic metre for a maximum of 3-4 days.
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