An analysis of Central Pollution Control Board data has revealed that the air quality in Delhi in November this year was worse than in 2019, reported PTI.
The data showed that the 30-day average air quality index, or AQI, in November 2020 was 328, which falls in the “very poor” category, while it was 312 this month last year. An AQI between zero 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”.
The Capital also recorded nine “severe” air quality days in November, the maximum number of such days in the month in four years. There were seven “severe” days in November last year. There were five such days each in November 2018 and 2017.
This year’s pollutions levels also breached the emergency threshold twice in November as smog enveloped the Capital for days. The air quality is considered in the “severe plus” or “emergency” category…