NEW DELHI: Capital's air got worse on Thursday with six monitoring station in the city indicating an Air Quality Index (AQI) above 300, which defines it as "very poor".
This was the fifth day when there was no significant change in the air quality. The monitoring stations at Anand Vihar, DTU, Delhi University North Campus, Punjabi Bagh, Shadipur and NSIT Dwarka all had an AQI of more than 300 on Wednesday.
Anand Vihar has been identified as the most polluted centre followed by others.
The officials of Central Pollution Control Board asserted that this condition is because of the climate and methodological issues.
A depression in the south and south east of the country, wind speed has decreased substantially in and around Delhi, identified as one the major meteorological cause of this situation.
Typically in winter, the wind speed is down making air quality fouler.
Scientists of the CPCB asserted that the air quality is also detonating due to the crop burning in the neighbouring states such as Punjab and Haryana.
A senior scientist said that 70 per cent of Delhi pollution is caused by crop burning.
He added that the air after the burning of crops in the neighbourhood states enters the Capital and as this time the climate changes which makes the air heavy so the polluted air cannot go out.
An AQI score between 200-300 is classified as "poor" as per CPCB standards, and it may cause "breathing discomfort to people on prolonged exposure, and discomfort to people with heart disease."