Air quality plunged to ''severe'' levels in Ghaziabad, Noida, Greater Noida and FaridabadPTI | Noida | Updated: 14-01-2021 21:59 IST | Created: 14-01-2021 21:53 IST
Air quality plunged to ''severe'' levels in Ghaziabad, Noida, Greater Noida and Faridabad, while it was ''very poor'' in Gurgaon, according to a 24-hour data issued by a government agency on Thursday.
According to the index, 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 CPCB states that an AQI in the ''severe'' category affects healthy people and seriously impacts those with existing diseases, while ''very poor'' may cause respiratory illness on prolonged exposure.
The AQI for each city is based on the average value of all stations there. Ghaziabad and Gurgaon have three such stations, while Noida, Greater Noida and Faridabad have two stations each, according to the app. PTI KIS AARAAR
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