By Aditya Kalra NEW DELHI (Reuters) – India has launched a new air quality index to help citizens understand complex pollution data and its implications for their health, the environment minister said on Friday. A World Health Organization (WHO) study of 1,600 cities released in May found New Delhi had the world’s dirtiest air with an annual average of 153 micrograms of small particulates, known as PM2.5, per cubic metre. Thirteen of the dirtiest 20 cities worldwide were in India, the WHO said. India rejected the report. …
Source: https://in.news.yahoo.com/heavily-polluted-india-launches-national-air-quality-index-144017321.html