---
station_id: cpcb-5393
raw_id: 5393
name: "Chandni Chowk"
city: "Delhi"
state: ""
country: India
provider: cpcb
provider_name: "Central Pollution Control Board, Government of India"
lat: 28.656756
lon: 77.227234
aqi: 500
band: severe
yll_years: 35.84
updated: 2026-11-12T15:05:11.110Z
updated_local: "12 Nov 2026, 20:35 IST"
source: https://oaq.notf.in
mirror: https://mugilu.live/s/cpcb/5393
---

# Chandni Chowk: Air Quality

Current AQI: **500 (Severe)** as of 12 Nov 2026, 20:35 IST.

Located in Delhi, India. Source: **Central Pollution Control Board, Government of India** via OAQ.

## Pollutants

| Pollutant | Value | Unit |
|---|---|---|
| PM2.5 | 370.7 | µg/m³ |
| PM10 | 830.3 | µg/m³ |
| NO₂ | 91.74 | µg/m³ |
| SO₂ | 23.58 | µg/m³ |
| O₃ | 17.19 | µg/m³ |
| NH₃ | 47.54 | µg/m³ |
| CO | 7.75 | mg/m³ |

## Estimated health impact (AQLI)

If this PM2.5 level (370.7 µg/m³) persisted as the annual average, the Air Quality Life Index estimates **35.84 years** of life expectancy lost vs. the WHO 5 µg/m³ guideline.

Formula: `max(0, PM2.5 − 5) × 0.098 years`. From Ebenstein et al. 2017 PNAS and Greenstone & Fan 2018 (U Chicago EPIC, [aqli.epic.uchicago.edu](https://aqli.epic.uchicago.edu)). This is a long-term exposure model applied to a live snapshot. Treat as an order-of-magnitude indication.

## Location

- Coordinates: 28.6568° N, 77.2272° E

## Source

Data from Central Pollution Control Board, Government of India via OAQ Data Broker (https://oaq.notf.in). Mirrored hourly. Licensed CC BY 4.0.

Part of an open-source mirror. See https://mugilu.live/about.