NEW DELHI: Even as Delhi experienced a nip in the air on Monday, there was not much respite from bad air. The air quality continued to remain poor and some areas saw high concentration of pollutants. At 4 pm, the air quality index (AQI), on a scale of 0 to 500, was 207.Track the pollution level in your cityThough following gusty winds, the air quality entered the moderate category around 7 pm on Monday,...