Delhi’s post-Diwali air quality may have been better than what it was last year but pollution levels in several parts of the city were recorded over 15 times the acceptable limits on Friday. While last year on Diwali day, Central Pollution Control Board’s (CPCB) air quality index had a value of 431, putting the air in the severe category, this year it was 319 and in the very poor range.
On Friday, however, pollution levels reached the severe category in the city.
The Supreme Court had banned the sale of fire crackers in the city to analyse its impact on air pollution, but several parts of the city saw fire works on Thursday night.
According to System of Air Quality and Weather Forecasting And Research, the city average for the tiny and dangerous PM 2.5 was 424 micrograms per cubic metre and that for PM 10 was 571 micrograms per cubic metre. The permissible limit of PM10 and PM2.5 are 100 and 60 microgram per cubic metre.
The air remained foul even till late this morning.
At India Gate, the PM 2.5 value at 10 am was at a very high level of 985 micrograms per cubic metre, according to the Delhi Pollution Control Committee (DPCC) real-time readings, putting the air in the severely polluted category. The pollutant level was more than 16 times the permissible limits.
At Mandir Marg, these levels were 355 micrograms per cubic metre. At Punjabi Bagh the PM 10 levels were 1514 micrograms per cubic metre, more than 15 times the permissible limits.
Both DPCC and CPCB are analysing the data and are expected to come out with a detailed comparison with last year’s post-Diwali pollution levels in the afternoon.