NDTV. On November 10, the AQI stood at 299 in the 'poor' category, before worsening to 313 ('very poor') on November 11, and reaching 350 ('very poor') on November 12. Delhi's air quality worsened sharply as the AQI climbed to 387, nearing the severe category, on Thursday. Thick smog continued to cover the Capital as low wind speeds trapped pollutants close to.