Express View: There is no trend in air quality that shows that efforts are being made to tackle it over the long term. As of now, the efforts, even if being made, are not making a notable difference
The air quality in various parts of Delhi showed a slight improvement on Tuesday morning after the rains on Monday evening and favourable wind speed due to the western disturbance impacting northwest India.
Delhi s air quality index (AQI) stood at 365 at 8 am on Tuesday, improving from 395 at 4 pm on Monday. The AQI at any given time is the average of readings taken in the last 24 hours. 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 , 401 and 450 severe and above 450 severe-plus .