Delhi Pollution: AQI 143 in ‘moderate’ category, improvement owing to westerly winds

A breath of relief for the Delhiite as the national capital’s air quality improved today, November 27, with AQI 143 recorded in the morning at 7 am. The improvement, attributed to the westerly winds, is noteworthy as the AQI jumped to the ‘moderate’ category after hovering in the ‘severe’ category for two days in a row.

According to data from the Central Pollution Control Board, the average AQI recorded on November 26 was 302, on November 25 was 413, and 379 on November 24.

Also Read: Delhi Pollution: AQI slips to ‘severe’ category again

With the westerly winds disbursing the pollutants and clearing out Delhi’s sky, the particulate matter (PM) levels also slumped. The coarse dust particles referred to as PM10 levels dropped from 410 μg/m3 on Thursday to 218 μg/m3 today morning. Also, PM2.5 or the most harmful aerosols in the air also dropped down to 133 μg/m3  from 243μg/m3 on Wednesday.

As per scientists at the Indian Meteorological Department (IMD), the improvement was mainly because of a change in the wind direction and speed. Also, on November 26, traces of rain were observed at the Lodhi Road and Ridge weather stations.

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