Chennai vs Darbhanga
Side-by-side air quality comparison between Chennai and Darbhanga.
Live AQI from Open-Meteo CAMS (~45 km global model, updated hourly). Multi-year history from CPCB station data via aqinow.co pipeline (2016–2024, station-level daily records).
AQI Comparison
Pollutant-level comparison (PM2.5, PM10, O3, NO2, SO2, CO)▾
| Pollutant | Chennai | Darbhanga |
|---|---|---|
| PM2.5(µg/m³) | 11.70 | 100.60 |
| PM10(µg/m³) | 13.10 | 113.20 |
| NO₂(µg/m³) | 14.20 | 27.00 |
| SO₂(µg/m³) | 10.10 | 18.40 |
| O₃(µg/m³) | 56.00 | 114.00 |
| CO(µg/m³) | 308.00 | 651.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chennai averaged an AQI of 68 while Darbhanga averaged 365 — a 297-point (437%) gap, with Darbhanga the more polluted and Chennai the cleaner of the two. On 396 days when both cities reported, Chennai was cleaner on 298 of them; the average daily gap was 118 AQI points.
Seasonality & days
Both cities see their worst air in December on average. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Darbhanga was 7.1% Severe and 26.9% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Darbhanga 20 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Darbhanga has worsened by 116 AQI points (46.6%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Darbhanga hit AQI 473 at Town Hall Lal Bagh (BSPCB) on 2023-01-01.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Darbhanga spans 1 stations with a 0-point spread (min 208, max 208).
Verdict
🏆 Chennai has better air quality with an AQI of 20 compared to Darbhanga's 236. That's a significant difference of 216 points.