Delhi government launches ‘Advanced Green War Room’ Delhi: Air quality improves slightly; likely to get better in coming days Smog-filled morning witnessed in parts of Delhi today Air pollution turns severe after millions defied firecracker ban on Diwali Delhi’s air quality remains in ‘very poor’ category Delhi finds breather as air quality improves with faster winds After Dussehra, air pollution exacerbates at Noida, Ghaziabad