Delhi chokes as air quality deteriorates to 5-year low post-Diwali, CPCB data shows
Delhi witnessed a sharp deterioration in air quality following Diwali, with PM2.5 levels surging to their highest in five years, according to an analysis of Central Pollution Control Board (CPCB) data. The average PM2.5 concentration reached 488 micrograms per cubic metre in the 24 hours after Diwali, more than three times the pre-festival level of 156.6 micrograms per cubic metre.
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