The air quality index from 0 to 100 is considered 'good', 100 to 200 'moderate', 200 to 300 'poor', 300 to 400 'very poor' and from 400 to 500 or above 'severe'.
The Air Quality Index (AQI) in Kathmandu has dropped to "very unhealthy" as the mercury drops, setting a record for the lowest temperature of the year.
Delhi Lieutenant Governor VK Saxena and Chief Minister Arvind Kejriwal flagged off 500 electric buses on Thursday. With this, the total number of electric buses in New Delhi has reached to 1300.
According to the air pollution data shared by the Punjab Environment Protection Department, Upper Mall remained the most polluted locality with a 508 Air Quality Index reading.
"For the past few days, the wind speed in Delhi has reduced, leading to an increase in pollution. Seeing that, we have convened a meeting today with the DPCC and officials to review the situation and discuss further steps that can be taken," he told ANI.
The air quality in the national capital continued to hover in the 'very poor' category on Friday, with the Air Quality Index (AQI) recorded at over 350 in several areas, according to the System of Air Quality and Weather Forecasting And Research (SAFAR-India).
While addressing a press conference, Gopal Rai said, "Though there has been a constant improvement in air quality, people still need to be aware in order to maintain this improvement."
The Commission for Air Quality Management (CAQM) on Saturday revoked the Stage-IV of the Graded Response Action Plan (GRAP) in Delhi and adjoining areas after the air quality improved from 'severe' to 'very poor' category.
The city, which had experienced five days of relatively normal air quality, saw a sudden spike with a maximum AQI of 401 recorded at 9 am, marking it as extremely unsafe for breathing.
Speaking to ANI on the deteriorating air quality situation, a morning walker said, "We are facing problems due to the poor air quality. We can sense burning and irritation in the eyes due to the rising pollution levels. We are also facing difficulty in breathing. Senior citizens are affected
Delhi's Environment Minister, Gopal Rai, has written a letter to the Uttar Pradesh Transport Minister and asked for action on the plying of non-destined vehicles in Delhi from UP's border to curb pollution in Delhi.