New Delhi, March 17 -- Delhi's air quality was in the "satisfactory" category for a second straight day on Sunday, aided by good wind speed and recent rain across NCR. The 24-hour average air quality index (AQI) stood at 99 (satisfactory) at 4pm on Sunday, a marginal dip from a reading of 85 (satisfactory) on Saturday, which was also Delhi's cleanest air day since September 29, 2024....