Delhi chokes as pollution levels remain 'severe' for second straight day

On Wednesday morning, the Delhi air quality index was 422 -- a little worse than Tuesday's AQI of 414 at 8 pm, according to the Central Pollution Control Board

Delhi air pollution: There is no respite from severe air pollution in Delhi as air quality remained in the "severe" category on Wednesday morning. The air quality was similar to what it was on Tuesday, the day it slipped into the "severe" category in the city and the adjoining areas.

At 6 am, the city's overall air quality index (AQI) was 422 -- a little worse than Tuesday's AQI of 414 at 8 pm, according to the Central Pollution Control Board.

An AQI between 0-50 is considered good, 51-100 satisfactory, 101-200 moderate, 201-300 poor, 301-400 very poor, and