The average 24-hour AQI at 4 pm on Monday was482 in both Gurgaon as well as Ghaziabad followed by 478 in Greater Noida,477 in Noida and 456 in Faridabad,according to the CPCB's Sameer app.
It was 456 in Ghaziabad, 440 in Greater Noida,434 in Gurgaon, 428 in Noida and 426 in Faridabad at the same time on Sunday.
PM 2.5 and PM 10 were the prominent pollutants in these neighbouring cities of Delhi, where the average AQI remained at 477 on Monday, according to the app.
The CPCB states that an AQI in the "severe" category "affects" healthy people and "seriously impacts" those with existing diseases.
The AQI for each city is based on the average value of all stations there. Noida, Faridabad, Ghaziabad have four stations each, while Gurgaon has three and Greater Noida two, according to the app.
Amid deteriorating air quality, the National Green Tribunal (NGT) on Monday imposed a "total ban" on sale or use of all kinds of firecrackers in the National Capital Region (NCR) from November 9 midnight to November 30 midnight, saying "celebration by crackers is for happiness and not to celebrate deaths and diseases".
(Only the headline and picture of this report may have been reworked by the Business Standard staff; the rest of the content is auto-generated from a syndicated feed.)
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