NEW DELHI: Delhi's air quality deteriorated sharply on Sunday, reaching a season-high AQI of 388 in the very poor range at 10 am. It marginally improved to 366 by 4 pm. The improvement was credited to afternoon winds, but forecasts suggest the relief may be short-lived, and Delhi may record its first severe AQI of the season by Tuesday.

The Centre's Air Quality Early Warning System has said that the AQI is "very likely to remain in the very poor category from Sunday to Monday" and then move to "severe on Tuesday, before returning to very poor readings on Wednesday." Long-term trends underline that Delhi has entered its most polluted phase of the year. A Delhi Pollution Control Committee (DPCC) analysis of Central Pollution Control Board's (CPCB) data found that Nov 1–15 has consistent

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