Delhi recorded its worst air quality on Diwali in four years, with pollution levels spiking sharply at night as PM2.5 concentrations peaked at 675 — a peak not seen since 2021.
Delhi's 24-hour average AQI at 4 pm on Monday was in the 'very poor' category at 345.
In comparison, it was 330 in 2024, 218 in 2023, 312 in 2022, and 382 in 2021, according to data from the Central Pollution Control Board.
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Many climate experts on Tuesday claimed that data from peak hours went missing.
Environment Minister Manjinder Singh Sirsa, however, claimed that all data was intact and th
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