Delhi is slowly recovering from an air pollution emergency, thanks to the increase in wind speed
NEW DELHI: Delhi's air quality improved further on Tuesday, giving people who suffer from acute contamination a break for a week and the trend is likely to continue for a couple of days.
The fall of 365 at 9.45 a.m. at 331 at 3.45 p.m., according to the Central Pollution Control Board.
In the National Capital Region, Greater Noida (348), Noida (358), Ghaziabad (351), Faridabad (311) and Gurugram (328) also recorded improvements in air quality.
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'. An AQI above 500 falls in the category 'more severe'.
The Department of Meteorology of India said that winds of up to 25 km/h were removing pollutants faster.
There is a good chance of rain in northwestern India on Wednesday night and Thursday due to one. The precipitation will cover Delhi-NCR, Jammu and Kashmir, Himachal Pradesh, Uttarakhand, Punjab Haryana, Rajasthan and the west, said Kuldeep Srivastava, the head of the IMD regional weather forecast center.
He said the situation will not be similar to Sunday when high humidity due to light rains led to the formation of more powerful secondary particles.
Secondary particles are the product of complicated atmospheric reactions between primary particles, such as particles, sulfur dioxide and nitrogen dioxide directly emitted by and vehicles, in the presence of other factors such as sunlight and humidity.
Examples of secondary particles include sulfates, nitrates, ozone and organic aerosols.
Srivastava said visibility levels improved to 3,000-3,500 meters in the afternoon, which is considered normal.
The air quality monitor of the Ministry of Earth Sciences, SAFAR, said: The AQI returns to the 'very poor' category after quickly recovering from 'severe' in large part due to the faster winds of the boundary layer ( 40 kmph)
Although Haryana and Punjab recorded 4,962 agricultural fires, the highest winds of the season, on Monday and north west, carrying smoke from stubble burning, continued to blow, quality continued to recover, he said.
It was mainly due to the high wind speed at the level of transport that quickly passed over Delhi without descending, SAFAR said.