Delhi air improves to 'very poor'; non-CNG vehicles may be banned

Delhi's air quality was 'severe' on Monday as the pollution level increased due to unfavourable meteorological conditions

Delhi's air quality continued to suffer as SAFAR recorded the capital's air quality index at a 'very poor' 397 on Tuesday morning. 

CPCB recorded the same as 402 and 'severe'. 

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".

Delhi's air quality turned 'severe' Monday as the pollution level increased due to unfavourable meteorological conditions, even as the Supreme Court-appointed EPCA directed authorities to allow construction only during the daytime and not charge toll from heavy vehicles stationed