Delhi's Air Won't Fix Itself: What Has Worked, What Hasn't

Delhi's PM2.5 averaged about 88 µg/m³ in 2023 — more than double India's own standard and 17 times the WHO limit.

Vehicles are the single biggest local source year-round; stubble burning is a seasonal spike, not the whole story.

Over half of Delhi's winter particulate load drifts in from neighbouring states, so city-only fixes have a ceiling.

Smog towers and cloud seeding made headlines but delivered little; buses, metro and cleaner fuel quietly did more.

Experts back a regional airshed plan, year-round enforcement and forecast-based action over reactive winter scrambles.