AQI of five areas in Delhi, two in Ghaziabad was recorded over 400 by CPCB in its data collected at 1 pm, showing Wazirpur (433), Alipur (406), Bawana (402), Jahangiri (439) Nehru Nagar (413) in Delhi, Loni (450) and Sanjay Nagar (404) in Ghaziabad and Sector 62 (420) in Noida among those under the last category of the index.

from Times of India https://timesofindia.indiatimes.com/city/delhi/aqi-of-8-areas-in-delhi-ncr-crosses-400-mark-on-diwali-afternoon/articleshow/87525258.cms