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Delhi air quality shows slight improvement with overall AQI at 239
The overall AQI was also `poor`, docking at 239, according to weather forecaster SAFAR.
New Delhi: Delhi gasped for breath on yet another day as the Air Quality Index (AQI) was in the 'poor' category, even though it recorded a slight improvement on Sunday.
The overall AQI was also 'poor', docking at 239, according to weather forecaster SAFAR.
At 9 am on Sunday morning, the AQI was recorded at 253 (`poor` category) around India Gate.
At Chandni Chowk area, the PM 10 was at 246 which is again in the `poor` category while the PM 2.5 levels were at 328 in the `very poor` category.
The PM 10 levels were slightly better at Lodhi Road, docking in at 135 which falls in the `moderate` category while the PM 2.5 remained `poor` at 235.
On Saturday, the AQI was in the `very poor` category for the third consecutive day.
The overall AQI was recorded to be 326.An AQI between 0-50 is considered `good`, 51-100 `satisfactory`, 101-200 `moderate`, 201-300 `poor`, 301-400 `very poor` and 401-500 is marked as `severe`.
An AQI above 500 falls in the `severe plus` category.
During winter each year, most of northern India suffers from a spike in toxicity in the air due to the change in weather patterns and crop residue burning in the neighbouring states of Haryana, Punjab and Uttar Pradesh.