Dhanbad vs Purnia
Side-by-side air quality comparison between Dhanbad 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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dhanbad averaged an AQI of 161 while Purnia averaged 133 — a 28-point (21%) gap, with Dhanbad the more polluted and Purnia the cleaner of the two. On 169 days when both cities reported, Purnia was cleaner on 113 of them; the average daily gap was 67 AQI points.
Seasonality & days
Dhanbad peaks in November, while Purnia peaks in January. Dhanbad logged 0.4% Severe days and 3.1% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Dhanbad 2 days, Purnia 14 days.
Year-over-year progress
The worst recorded day for Dhanbad reached AQI 436 at Kalakusuma (DMC) on 2024-04-28; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Dhanbad spans 2 CPCB stations with a 12-point spread (min 156, max 168); Purnia spans 1 stations with a 0-point spread (min 176, max 176).