New Delhi’s air quality further improved on Wednesday to the “moderate” category. According to the System of Air Quality and Weather Forecasting and Research (SAFAR), the overall Air Quality Index (AQI) in Delhi stood at 176 this morning. The national capital’s air pollution level fell from “very poor” to “poor” on Tuesday, with an AQI of 221.
The Air Quality Index is a tool for effectively communicating the status of air quality to people in simple terms.It transforms complex air quality data of various pollutants into a single number (index value), nomenclature, and colour.
The Air Quality Index from 0 to 100 is considered good, while from 100 to 200 it is moderate, from 200 to 300 it is poor, from 300 to 400 it is said to be very poor, and from 400 to 500 or above it is considered severe.
Delhi’s air quality improved due to the decline in farm fires in its neighbouring states. According to SAFAR, farm fires in Delhi’s PM 2.5 pollution dropped to 3% on Tuesday.
In view of the improvement in the overall air quality of the Delhi-NCR seen in the past few days, Stage III of the Graded Response Action Plan (GRAP) was revoked in the entire NCR on Monday.