Edited by Sumana Nandy
| Wednesday November 15, 2017, New Delhi
Delhi and adjoining areas in the NCR have been engulfed in a blanket of smog for over a week in November. The air quality index or AQI, which measures the amount of the pollutant PM2.5 and other particles in the air, had plummeted to levels close to 500 which falls under the 'hazardous' category. With warnings of apublic health emergency declared, residents of the national capital reeled under the perilous effects of toxic air.