Delhi-NCR, along with other North Indian states, had very poor air quality across several cities in North India remained in the hazardous category on Friday, with pollution levels touching alarming highs. According to the Central Pollution Control Board, Anand Vihar recorded the worst air quality with an AQI of 368, followed by Noida (334) and Gurugram (277). Other nearby cities such as Bulandshahr (281), Faridabad (201), and Karnal (257) were also severely affected.

Particulate matter levels remained critically high far above the safe limits prescribed by the World Health Organization. The situation was worsened by cold morning temperatures around 13 degrees Celsius and high humidity (72 per cent). But while the poor air quality affects everyone, experts say people with diabetes are

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