Delhi’s air quality index (AQI) hit the “severe” category, which was 404 on November 9, according to the health bulletin. Nearby cities – Gurgaon, Ghaziabad, Noida and Faridabad – have been equally affected. According to several studies, air pollution may reduce life expectancy of Indians by nine years.In popular perception, the crisis is limited to winter smog and mainly caused due to stubble burning in neighbouring Punjab and Haryana.The Wire breaks down the air pollution crisis.
