<span style="font-size: 13.3333px;">The National Green Tribunal (NGT) today took cognisance of deteriorating air quality in Delhi-NCR and asked the officials of various government departments to appear before it tomorrow.<br />''</span><br />''The Tribunal directed the officers from the Delhi government, Central Pollution Control Board, Delhi Pollution Control Committee and Ministry of Environment and Forests to appear at 10.30 AM tomorrow before it.<br />''<br />''<br />''<br />