Satisfactory (51–100, yellow), Moderate (101–200, orange), Poor (201–300, red), Very Poor (301–400, purple) and Severe ...
The air quality in Delhi on Tuesday remained at the upper range of the very poor category, with the overall AQI touching 363, ...
The national capital woke up to dense smog as the average Air Quality Index (AQI) stood at 359 at 7 am, falling under the ...