Dhanbad vs Samastipur
Side-by-side air quality comparison between Dhanbad and Samastipur.
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 | Dhanbad | Samastipur |
|---|---|---|
| PM2.5(µg/m³) | 92.20 | 118.00 |
| PM10(µg/m³) | 100.10 | 134.60 |
| NO₂(µg/m³) | 60.10 | 61.60 |
| SO₂(µg/m³) | 187.20 | 18.30 |
| O₃(µg/m³) | 36.00 | 5.00 |
| CO(µg/m³) | 755.00 | 837.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dhanbad averaged an AQI of 161 while Samastipur averaged 134 — a 27-point (20%) gap, with Dhanbad the more polluted and Samastipur the cleaner of the two. On 175 days when both cities reported, Samastipur was cleaner on 126 of them; the average daily gap was 64 AQI points.
Seasonality & days
Dhanbad peaks in November, while Samastipur peaks in January. Dhanbad logged 0.4% Severe days and 3.1% Good-or-Satisfactory days; Samastipur was 1.4% Severe and 23.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Dhanbad 2 days, Samastipur 9 days.
Year-over-year progress
The worst recorded day for Dhanbad reached AQI 436 at Kalakusuma (DMC) on 2024-04-28; Samastipur hit AQI 459 at DM Office Kasipur (BSPCB) on 2023-01-01.
Station-level disparity
Dhanbad spans 2 CPCB stations with a 12-point spread (min 156, max 168); Samastipur spans 1 stations with a 0-point spread (min 177, max 177).
Verdict
🏆 Dhanbad has better air quality with an AQI of 208 compared to Samastipur's 293. That's a significant difference of 85 points.