India, Nov. 26 -- Delhi's air quality remained in the 'very poor' category on Tuesday, extending a toxic streak to 20 consecutive days and putting the Capital on course to record its second-longest pollution siege if similar air pollution persists till the weekend, as has been predicted.

With 353 at 4pm on Tuesday, the Air Quality Index (AQI) has now been at 300 or above since November 6, the fifth-longest such streak recorded since the Central Pollution Control Board (CPCB) launched the index in April 2015. Forecasts show meteorological conditions are unlikely to improve before November 28, which would push the streak to 23 days - tying for the second-worst on record.

The longest streak came last year, when Delhi logged 32 consecutive ...