The average 24-hour AQI at 4 pm on Friday was 382 inGhaziabad, 337 in Noida, 336 in Greater Noida, 324 in Gurgaon and319 in Faridabad, according to the CPCB's Sameer app.
On Thursday it was 328 in Ghaziabad, 327 in Greater Noida, 305 in Noida,304 in Faridabadand 293 in Gurgaon.
PM 2.5 and PM 10 were the prominent pollutants in Noida, Greater Noida, Ghaziabad, Faridabad and Gurgaon, according to CPCB.
The CPCB states that an AQI in the 'very poor' category may cause respiratory illness on prolonged exposure, while air quality in the 'poor' zone may lead to breathing discomfort to most people on prolonged exposure.
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 has two, according to the app.
(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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