The air pollution in Delhi has spiked to dangerous levels due to extremely low ventilation and calm surface winds. On Saturday morning, the air quality touched the ‘hazardous’ level with the AQI touching 492, according to the latest estimates updated by the System of Air Quality and Weather Forecasting And Research (SAFAR). PM2.5 remains the lead pollutant instead of PM10 as a characteristic of wintertime.
‘Hazardous’ air in Delhi
According to SAFAR estimates updated at 6 am, several areas in the national capital including Delhi University, Pusa Road, Lodhi Road, Mathura Road, IIT-Delhi, Indira Gandhi International Airport (Terminal-3) and Ayanagar recorded air quality in the severe category with an AQI of 505, 500, 479, 591, 451, 511, and 441 respectively.
According to SAFAR, AQI between the range of 51 and 100 is considered as ‘satisfactory’ or ‘very good’, 101-200 is ‘moderate’, 201-300 falls under the category of ‘poor’. While 300-400 is considered as ‘very poor’, levels between 401-500 fall under the ‘hazardous’ category.