Darbhanga vs Purnia
Side-by-side air quality comparison between Darbhanga and Purnia.
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 | Darbhanga | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 111.50 | 105.90 |
| PM10(µg/m³) | 122.90 | 109.00 |
| NO₂(µg/m³) | 42.70 | 25.20 |
| SO₂(µg/m³) | 18.40 | 20.10 |
| O₃(µg/m³) | 61.00 | 67.00 |
| CO(µg/m³) | 767.00 | 707.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2023, Darbhanga averaged an AQI of 365 while Purnia averaged 133 — a 232-point (174%) gap, with Darbhanga the more polluted and Purnia the cleaner of the two. On 326 days when both cities reported, Darbhanga was cleaner on 171 of them; the average daily gap was 43 AQI points.
Seasonality & days
Darbhanga peaks in December, while Purnia peaks in January. Darbhanga logged 7.1% Severe days and 26.9% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Darbhanga 20 days, Purnia 14 days.
Year-over-year progress
Darbhanga has worsened by 116 AQI points (46.6%) from 2021 to 2023; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Darbhanga reached AQI 473 at Town Hall Lal Bagh (BSPCB) on 2023-01-01; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Darbhanga spans 1 CPCB stations with a 0-point spread (min 208, max 208); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Purnia has better air quality with an AQI of 253 compared to Darbhanga's 272.