About six days ago, India released a draft Air Quality Index. The idea is unexceptionable. The Index seeks to make air quality more easily comprehensible by reporting air quality not as dry numbers of raw concentrations but as colour-coded assessments of health impacts — good, moderate, poor, very poor, hazardous, etc. In this story out today, I argue, however, that for the index to be useful, fundamental problems in air quality assessments need to be fixed first.
This story, as things stand, is a followup to another story on air quality published about ten days ago. You need to, if you haven’t already, read the first one. Its PDF and, here, a link.
ps: Yesterday was diwali. And, while surfing to see how air quality was faring, I saw some eye-popping numbers. See these.