Hubli-Dharwad vs Samastipur
Side-by-side air quality comparison between Hubli-Dharwad 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 | Hubli-Dharwad | Samastipur |
|---|---|---|
| PM2.5(µg/m³) | 5.30 | 118.70 |
| PM10(µg/m³) | 8.40 | 131.30 |
| NO₂(µg/m³) | 5.20 | 48.30 |
| SO₂(µg/m³) | 1.20 | 20.10 |
| O₃(µg/m³) | 39.00 | 57.00 |
| CO(µg/m³) | 117.00 | 732.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hubli-Dharwad averaged an AQI of 64 while Samastipur averaged 134 — a 70-point (109%) gap, with Samastipur the more polluted and Hubli-Dharwad the cleaner of the two. On 760 days when both cities reported, Hubli-Dharwad was cleaner on 683 of them; the average daily gap was 100 AQI points.
Seasonality & days
Hubli-Dharwad peaks in February, while Samastipur peaks in January. Hubli-Dharwad logged 0% Severe days and 74.1% Good-or-Satisfactory days; Samastipur was 1.4% Severe and 23.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Hubli-Dharwad 180 days, Samastipur 9 days.
Year-over-year progress
Hubli-Dharwad has improved by 18 AQI points (22%) from 2018 to 2024; Samastipur has improved by 84 AQI points (38.5%) over the same window. The worst recorded day for Hubli-Dharwad reached AQI 500 at Deshpande Nagar (KSPCB) on 2018-05-21; Samastipur hit AQI 459 at DM Office Kasipur (BSPCB) on 2023-01-01.
Station-level disparity
Hubli-Dharwad spans 2 CPCB stations with a 6-point spread (min 73, max 79); Samastipur spans 1 stations with a 0-point spread (min 177, max 177).
Verdict
🏆 Hubli-Dharwad has better air quality with an AQI of 9 compared to Samastipur's 296. That's a significant difference of 287 points.