CNG rate changed recently. The new prices which includes international crude oil prices,INR-USD exchange rate and state levies, will come into effective from 21-Sep-2019 at 6 AM.
Similar fuel price revision seen in other State-owned fuel retailers Bharat Petroleum Corporation (BPCL), Hindustan Petroleum Corporation (HPCL), Essar oil and Shell India. you can check revised petrol and diesel price from other fuel retailer here.
CNG price after recent revision, a liter of CNG will cost Rs 40.61 per litre in Delhi Delhi at IGL.