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Delhi records 'worst' air quality of season as haze sets in, pollution to worsen on Diwali

India TV News Desk [ Updated: October 29, 2018 0:02 IST ]
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".