Monday marked a record-breaking day in New Delhi’s modern history- the national capital region breathed its cleanest air in 5 years since the Air Quality Index was enacted to measure pollution levels.
Delhi’s Air Quality Index (AQI) marked just 41 on Monday, which is the lowest ever reading of the air quality index since the Central Pollution Control Board (CPCB) started measuring the same on April 15th, 2015, TOI reported.
The lowest air quality index that came close to Monday’s measurement was back in July 2017 where the score plummeted to 43. This year’s august has noted ‘good’ air quality in Delhi, a rare sight in one of the world’s most heavily polluted cities.
In the last five years, 2017 has recorded two ‘good’ air days, in 2019 there were two ‘good’ air days and 2020 saw five ‘good’ air days all total in the national capital.
According to CPCB, more ‘good’ air days are expected in September, with this year’s August already breaking records for the cleanest month since the AQI was installed five years ago.
Monday’s measurement was taken from 32 pollution sensing installation scattered across the city on a 24-hour average time-frame. The outcomes showed air quality sustained its ‘good’ marks for several hours on Monday and Sunday.
According to Anumita Roy Chowdhury, executive director (research and advocacy) at Centre for Science and Environment, premature monsoons and lockdown induced effect bore clean air index.
“After the unlocking process started, monsoon hit Delhi-NCR. This kept background emissions lower than normal. Winter data will also need to be assessed to arrive at a conclusion,” Roy Chowdhury was quoted as saying.