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Delhi's air quality improves
Delhis air quality improved slightly a day after it slipped into the poor category due to a dust storm that originated from the Arabian peninsula, authorities said on Saturday
New Delhi: Delhi's air quality improved slightly a day after it slipped into the 'poor' category due to a dust storm that originated from the Arabian peninsula, authorities said on Saturday.
Last week, the air quality became 'good' for the first this year. But after a dust storm from Oman, the air quality index slipped to 'poor' category, an official with the Central Pollution Control Board said.
But as the dust started subsided, the air quality improved and has now come under 'moderate' category, he said.
The air quality index (AQI) was recorded at 195, which falls under the 'moderate' category as per the Central Pollution Control Board (CPCB) data.
The PM10 (particulate matter) levels increased to settle at 254 micrograms per cubic metre on Saturday. This is over two times the prescribed standard of 100 mg/m3.
The PM2.5 was in the moderate category at 66 mg/m3 as per CPCB. An AQI between 0-50 is considered 'good', 51-100 'satisfactory', 101-200 'moderate', 201-300 'poor', 301-400 'very poor', and 401-500 'severe'.
"The dominant pollutant, however, is PM10, which is less dangerous. It is likely to reduce further in the next three days," the official added.
