The residents of the National Capital Region have been advised to minimise outdoor activities for next few days as Delhi recorded its second highest pollution level this year on Sunday and the authorities say that the conditions are likely to persist over next two days.
The Central Pollution Control Board (CPCB) said unfavourable meteorological conditions are likely to keep the air quality in the severe category for the next couple of days.
While the CPCB data showed the overall air quality index (AQI) at 'severe' level of 450, the Centre-run System of Air Quality and Weather Forecasting (SAFAR) showed a higher level at 471. This is the second highest pollution level this year. The highest was recorded on November 8, a day after Diwali, when the AQI touched 571.
A CPCB-led task force has advised people to minimise outdoor exposure for the next three to five days and avoid using private vehicles.
Prolonged exposure to PM2.5 pollutants can lead to diseases like cancer and increases chances of stroke.
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The task force held a meeting on Saturday in response to the current high PM2.5 levels which climbed to severe plus emergency category.
At the meeting, a number of recommendations were made to the Supreme Court-appointed Environment Pollution Control Authority (EPCA), including agencies to intensify ground actions to enforce measures already in place, particularly to control emissions from vehicles and burning of biomass.
The other recommendations made were: agencies concerned to increase surveillance to find industrial waste dumping or burning especially in hotspots that are vulnerable to high pollution level, water sprinkling and mechanised sweeping to be intensified and traffic police to ensure smooth flow of traffic, including during long holidays.
According to experts, under the 'severe' category, even healthy people find it hard to breathe and doctors advise minimum physical activity.
Thirty areas of the national capital recorded on Sunday 'severe' air quality while it was 'very poor' in six, the CPCB said.
Several areas like Ashok Vihar, Anand Vihar and Wazirpur, among others, inched towards the 'severe plus emergency' category, the data showed.
In NCR, Ghaziabad recorded the worst air quality with an AQI of 475. Faridabad and Noida also recorded 'severe' air quality, the CPCB said.
In Delhi, the overall PM2.5 level -- fine particulate matter in the air with a diameter of less than 2.5 micrometer -- was recorded at 404 and the PM10 -- fine particulate matter in the air with a diameter of less than 10 micrometer--level at 577, the CPCB said.
Both PM2.5 and PM10 fell in the 'severe plus emergency' category, it said.
The IMD said prolonged period of light winds and low temperature are likely to continue for the next three to five days, resulting in poor dispersion of pollutants and the current severe air quality may continue for the next two to three days.
There is a significant fall in temperature which has brought huge amount of moisture beneath and slowed dispersion of pollutants, it said.
(With inputs from PTI)
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