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Air quality after Diwali tied to level of fireworks

With an air quality index of 306, the city's air quality was recorded as very poor by the Central Pollution Control Board and the possibility of it turning severe is looming large

Press Trust of India  |  New Delhi 

Representative Image
Representative Image

Delhi's is likely to worsen and turn 'severe' a day after Diwali, mainly due to meteorological conditions that will trap from local sources such as firecrackers.

This time, the atmospheric conditions are such that the post-is entirely tied to the level of firecrackers the city witnesses on the night of the festivities, experts said on Tuesday.

With an index (AQI) of 306, the city's air quality was recorded as 'very poor' by the (CPCB) today and the possibility of it turning 'severe' is looming large.

However, in Rajasthan's Bhiwadi, which is an industrial hub barely 80 kilometres from and part of the Capital Region, AQI was severe, the worst in the entire country.

"The level of moisture in the air will shoot up on October 20. Speed of local wind movement, which plays a crucial role in dispersing pollutants, will also be low thus resulting in accumulation of pollutants," CPCB member secretary A Sudhakar said.

Sunita Narain, a member of the Supreme Court-empowered Environment Pollution Prevention and Control Authority (EPCA), said the toxicity of the including road or construction dust increase manifold when coated with chemicals, which are present in firecrackers, and warned against measuring pollution merely going the volume of dust in air.

The 24-hour rolling average of PM 2.5, which are ultrafine 30 times finer than the width of a human hair, was 137 micrograms per cubic metre (ug/m3) today, violating the safe standard of 60 by over two times.

Winter is a critical time in as meteorological conditions trap near the earth's surface.

The volume of pollutants also rises alarmingly due to the burning of paddy stubble in Haryana and Punjab and bursting of firecrackers during the festive season.

Last year, the air quality of had plunged and a dense blanket of smog had kept the city shrouded for over a week in November, soon after the festivities, prompting the authorities to announce closure of schools among other emergency measures.

(Only the headline and picture of this report may have been reworked by the Business Standard staff; the rest of the content is auto-generated from a syndicated feed.)

First Published: Wed, October 18 2017. 00:57 IST