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New Delhi: Delhi's air quality slightly improved Sunday after increase in wind speed, authorities said. According to the Central Pollution Control Board (CPCB) data, the overall air quality index (AQI) of the city was at 291, which falls in the 'poor' category.
Delhi's air quality had dipped to 'very poor' category due to rains, which increased the pollutant holding capacity of air. An AQI between 0 and 50 is considered 'good', 51 and 100 'satisfactory', 101 and 200 'moderate', 201 and 300 'poor', 301 and 400 'very poor', and between 401 and 500 'severe'.
The CPCB said 16 areas recorded 'very poor' air quality while 18 areas recorded 'poor' air quality.
In the National Capital Region, Ghaziabad and Greater Noida recorded 'very poor' air quality while Gurgaon and Noida, recorded 'poor' air quality, the CPCB data showed.