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“Every Delhiite knows that air pollution varies by season. But not every Delhiite knows that it varies in type, by time of day and day of the week. This variation might make a difference to the way the city’s residents plan their activities, and it certainly should influence how policymakers design an approach to the problem. The Central Pollution Control Board and Air Quality Index websites are both useful for finding real-time air pollution readings around the city, but they don’t track or analyse broad patterns. We examined ambient air pollution data going back to 2012 from the CPCB website and found some interesting results.” This study/article explains the seasonal differences impacting air quality and what time of day and which day of the week that air pollution is worst during winter and spring. The Quint. Read it on

Delhi Had Clean Spring Air – But It Won’t Last