---
station_id: cpcb-5553
raw_id: 5553
name: "Chitragupta Nagar"
city: "Siwan"
state: ""
country: India
provider: cpcb
provider_name: "Central Pollution Control Board, Government of India"
lat: 26.2271665
lon: 84.3570427
aqi: 286
band: poor
yll_years: 10.88
updated: 2026-11-12T16:05:12.214Z
updated_local: "12 Nov 2026, 21:35 IST"
source: https://oaq.notf.in
mirror: https://mugilu.live/s/cpcb/5553
---

# Chitragupta Nagar: Air Quality

Current AQI: **286 (Poor)** as of 12 Nov 2026, 21:35 IST.

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

## Pollutants

| Pollutant | Value | Unit |
|---|---|---|
| PM2.5 | 116 | µg/m³ |
| PM10 | 185 | µg/m³ |
| NO₂ | 1.5 | µg/m³ |
| SO₂ | 7.4 | µg/m³ |
| O₃ | 6.6 | µg/m³ |
| NH₃ | 3.4 | µg/m³ |
| CO | 1.24 | mg/m³ |

## Estimated health impact (AQLI)

If this PM2.5 level (116 µg/m³) persisted as the annual average, the Air Quality Life Index estimates **10.88 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: 26.2272° N, 84.3570° 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.