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Delhi's air quality falls, AQI at 352; 6 areas record severe pollution

Ghaziabad recorded severe pollution level at 404 while Faridabad and Noida recorded "very poor" air quality

Press Trust of India  |  New Delhi 

Delhi air pollution
Photo: Reuters

Delhi's air quality deteriorated further with six areas in the city recording severe as authorities predicted further rise in the next two days.

The Central Control Board (CPCB) recorded an overall (AQI) of 352, which falls in the "very poor" category.

An AQI between 0 and 50 is considered "good", 51 and 100 "satisfactory", 101 and 200 "moderate", 201 and 300 "poor", 301 and 400 "very poor" and 401 and 500 is considered to be "severe".

Six areas -- Ashok Vihar, Anand Vihar, Burari, Mundaka, and Wazirpur -- recorded severe air quality, according to the

Twenty-five areas of the capital recorded "very poor" air quality, while in four areas it was in the "poor" category, it said.

The PM2.5 (fine particulate matter in the air with a diameter of less than 2.5 micrometre) level was recorded at 208 and the PM10 level at 397, it added.

Ghaziabad recorded severe level at 404 while and recorded "very poor" air quality, according to the data.

In Gurgaon, the air quality was "poor", it said.

The Centre-run System of Air Quality and Weather Forecasting (SAFAR) said the dropped speedily as expected, but remained "very poor".

"Although increasing-AQI trend is predicted from tonight (Tuesday night) for the next two days, it will remain in 'very poor' range only. This is mainly due to decline in wind speed along with adverse meteorological conditions. The contribution from long-range dust or stubble biomass is negligible," the said.

According to the (IITM), the maximum ventilation index is likely to be 3,500 sqm/second on Tuesday.

A ventilation index lower than 6,000 sqm/second with average wind speed less than 10 kmph is unfavourable for dispersion of pollutants, the IITM said.

Delhi's air quality has been in the "very poor" category for the past one week but on Saturday it had improved to "poor" category for a brief period. It again slipped into "very poor" category Sunday, the authorities said.

First Published: Tue, December 04 2018. 12:25 IST