Noida (UP): He typical air quality across Ghaziabad, Noida, Greater Noida, Delhi, Fridabad and Gurgaon was recorded ‘very poor’, which can cause respiratory disease to people on prolonged exposure, for a second day during a row, consistent with data issued by a agency on Monday.
Pollutants PM 2.5 and PM 10 also remained within the air of the five immediate neighbours of Delhi, consistent with the air quality index (AQI) maintained by the Central Pollution control panel (CPCB).
According to the index, an AQI between zero and 50 is taken into account ‘good’, 51 and 100 ‘satisfactory’, 101 and 200 ‘moderate’, 201 and 300 ‘poor’, 301 and 400 ‘very poor’, and 401 and 500 ‘severe’.
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The average 24-hour AQI at 4 pm on Tuesday was 356 in Ghaziabad, 335 in Noida, 375 in Greater Noida, 410 in Delhi, 310 in Faridabad and 302 in Gurgaon, consistent with CPCB’s Sameer app.
On Monday and Tuesday it had been 369 in Ghaziabad, 368 in Noida, 349 in Greater Noida, 410 in Delhi, 353 in Faridabad and 306 in Gurgaon.
On Sunday it had been 416 in Ghaziabad, 416 in Noida, 402 in Greater Noida, 366 in Faridabad and 288 in Gurgaon. The CPCB states that an AQI within the ‘very poor’ category may cause respiratory disease to people on prolonged exposure.
The AQI for every city is predicated on the typical value of all monitoring stations there. Ghaziabad, Gurgaon and Noida have four such stations while Greater Noida and Faridabad have two stations each, consistent with the app. (PTI)
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