The national capital city, Delhi's air quality remained 'very poor' on Sunday though a change in meteorological conditions due to a western disturbance may bring some relief. The city’s air quality index (AQI) stood at 369, according to monitoring agencies.

The 24-hour average AQI, recorded at 4 pm every day, was 389 on Saturday, 415 on Friday, 390 on Thursday, 394 on Wednesday, 365 on Tuesday, 348 on Monday and 301 on Sunday (November 19). 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'.