New Delhi (PTI): Delhi's air quality worsened on Sunday as weak winds trapped pollutants, raising the overall AQI to 366 in the "very poor" category with three monitoring stations recording readings above 400 in the "severe" category, Centre Pollution Control Board data showed.

The PM2.5 concentration stood at 189.6 micrograms per cubic metre and PM10 at 316. PM2.5 refers to fine inhalable particles with diameters that are 2.5 micrometres or smaller, while PM10 includes slightly larger particles up to 10 micrometres in diameter, as per CPCB.

At such levels, these pollutants can cause breathing discomfort, especially among people with lung or heart diseases, children and the elderly.

The overall AQI rose sharply from 303 recorded a day earlier, CPCB data showed.

Neighbouring cities in

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