In 2025, Delhi met national PM2.5 standards on just 156 days — mere 4 of these in winter

In 2025, Delhi met the national PM2.5 air quality standard on only 156 out of 365 days. This accounted for just 43 per cent of the year, with only four such days recorded during the winter season, which remained the most polluted period. The monsoon months were the cleanest, helped by frequent rainfall and favourable winds. Data shows that while national standards were met on some days, Delhi almost entirely failed to meet the stricter World Health Organization air quality guidelines, highlighting the city’s continuing air pollution crisis.

Either check the newspaper clipping attached below or click on the link to read this copy: In 2025, Delhi met national PM2.5 standards on just 156 days — mere 4 of these in winter