New Delhi: While Diwali night once again lit up Delhi’s skies, data from AQI.in suggests the festival may not be the main villain behind the capital’s worsening air quality. The numbers show that, although pollution levels rose slightly on the night of October 20, 2025, Delhi’s air was already poor before the festivities and remained largely unchanged in the days that followed.

Average AQI overview across Delhi NCR Phase AQI Range Category Key Observation Pre-Diwali (17–19 Oct) 240–330 Poor to Very Poor Pollution already high due to crop burning, humidity, and emissions Diwali Night (20 Oct) 370–430 Very Poor to Severe Temporary spike from fireworks and stagnant air Post-Diwali (21–23 Oct) 320–380 Very Poor Marginal improvement, nearly same as pre-Diwali levels

(Data quoted fro

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