Delhi Pollution: National Capital's air slips back to 'very poor' from 'severe' category

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Delhi Pollution: National Capital’s air slips back to ‘very poor’ from ‘severe’ category

An AQI between 0-50 is marked good, 51-100 is satisfactory, 101- 200 is moderate, 201- 300 is poor, 301-400 is very poor and 401-500 is considered severe. According to experts, the severe category affects the health of people and seriously impacts those with existing diseases.