Delhi's ongoing battle with severe air pollution entered its seventh consecutive day on Monday, keeping the Air Quality Index (AQI) firmly entrenched in the 'severe plus' category. The situation remains dire, with some of the worst-affected areas in the national capital being RK Puram (AQI 466), ITO (AQI 402), Patparganj (AQI 471), and New Moti Bagh (AQI 488), NDTV reported.