Air quality in Delhi improves as winds disperse pollutants
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, and 401 and 500 severe.
The city's air quality index (AQI) read 236 at 9 am. The 24-hour average AQI stood at 255 at 4 pm on Tuesday. Pic: Reuters