Capital’s air most polluted from Nov 1 to 15, shows data

The Capital breathes its most polluted air between November 1 and November 15 when the smoke from stubble fires and firecrackers plunges the city into a health emergency, a Delhi government analysis of average PM2.5 (particulate matter with diameter less than 2.5 micrometres) levels over the last five years showed.

The analysis by the government’s environment department found that average PM2.5 levels between November 1 and 15 touched 285ug/m3, categorised as “severe” under regulations of the Graded Response Action Plan (Grap)