Delhi's air quality remains 'severe' for 4th consecutive day

Representational Pic

Representational Pic

"SAFAR forecasting model predicts a faster improvement due to faster dispersion and deposition owing to a shorter lifetime of particles near the surface". "The pollution level continues to be risky for the third day but Mr. Kejriwal has not awakened. he has not paid heed to the Delhi BJP's demand to call an All Party Meeting [to discuss] the issue", said Delhi BJP chief Manoj Tiwari.

The index on Tuesday was 5,000 sqm/second on Tuesday, the IITM said.

The Supreme Court-appointed Environment Pollution Control Authority (EPCA) on Monday imposed a three-day ban on industrial activities in pollution hot-spots and construction work across the national capital region.

Twenty-three areas had recorded severe pollution level, while 12 areas witnessed very poor air quality, the CPCB data had shown.

At Lodhi road, the AQI (Air Quality Index) was 315 with PM (Particulate Matter) 2.5 at 8.30 am.

This comes a day after Delhi recorded its most polluted day of the year when the air quality index touched 450, higher than post-Diwali pollution levels.

Delhi's air quality improved slightly on Wednesday, climbing from "severe" category to "very poor" category after the Capital was forced to celebrate Christmas choking on Tuesday. In a letter to Delhi chief secretary Vijay Kumar Dev, EPCA chairperson Bhure Lal also said that all construction activities in Delhi, Faridabad, Gurugram, Ghaziabad, and Noida will be stopped till December 26. An index value higher than 400 is categorised "severe".

Speaking to the media, he said the Delhi government was doing its part, but everyone should contribute to reducing the air pollution.

The agencies concerned have also been asked to ensure strict action against illegal industries, intensify ground action and make all efforts to control polluting activities, particularly waste burning.

In a health advisory, the SAFAR has asked Delhiites not to rely on common dust masks for protection.

Vertical mixing in the room that is available for pollutants to disperse. A ventilation index lower than 6,000 sqm/second, with average wind speed less than 10 kmph, is unfavourable for dispersion of pollutants.

Experts advised against all physical activities outdoors and prescribed the use of N-95 or P-100 respirators when stepping out. "Minimum temperatures very likely to fall by 2-3 degree Celsius over many parts of northwest, central and west India during next three-four days", the Indian Meteorological Department said.

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