Question

Causes and solution of delhi air pollution

Answer 1

Air quality swung back to pre-Diwali levels with most monitoring stations in the NCR registering “very poor” on the index. This was primarily due to elevated concentrations of particulate matter 2.5, a class of pollutants implicated in aggravating respiratory diseases.

Data from 15 stations on Sunday said that AQI stood at 329 or the “red zone”, but several points below the “maroon zone” or 400, when air quality is deemed to be “severely” bad. The day after Diwali, the AQI had dropped to “severe”.

Stagnant air

Experts said this was due to stagnant air that had partly resulted from a depression in the Bay of Bengal. The effect of this, however, wasn’t specific to Delhi and air quality was “very poor” in several parts of north India including Agra, Moradabad and as far as Amritsar.

Despite a ban on the sale of crackers, the evening after Diwali saw Delhi record its sharpest dip in air quality this year.

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