The national capital’s overall air quality inched closer to the severe category on Thursday morning as pollution levels rose sharply after a marginal reduction, primarily due to calm winds and spike in farm fires. The central government’s Air Quality Early Warning System for Delhi said a significant increase in the number of fire points was observed over Punjab (around 3,000), Haryana and Uttar Pradesh on Wednesday which is likely to impact the air quality of Delhi-NCR and other parts of northwest India. Delhi recorded an air quality index (AQI) of 397 at 11 am on Thursday. The 24-hour average AQI was 297 on Wednesday, 312 on Tuesday, 353 on Monday, 349 on Sunday, 345 on Saturday and 366 on Friday.Also read | India’s air quality data for comparing annual pollution is patchy An AQI between 0 and 50 is considered ‘good’, 51 and 100 ‘satisfactory’, 101 and 200 ‘moderate’, 201 and 300 ‘poor’, 301 and 400 ‘very poor’, and 401 and 500 ‘severe’A senior scientist at the India Meteorological Department (IMD) said the wind speed dipped on Wednesday which allowed accumulation of pollutants. Following slight relief, the air quality again entered the ‘very poor’ category by the evening, he said.PM10… Read full this story
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