Hubli-Dharwad vs Vellore
Side-by-side air quality comparison between Hubli-Dharwad and Vellore.
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 | Vellore |
|---|---|---|
| PM2.5(µg/m³) | 5.50 | 8.00 |
| PM10(µg/m³) | 8.70 | 10.00 |
| NO₂(µg/m³) | 6.00 | 11.40 |
| SO₂(µg/m³) | 1.20 | 4.50 |
| O₃(µg/m³) | 36.00 | 41.00 |
| CO(µg/m³) | 114.00 | 175.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hubli-Dharwad averaged an AQI of 64 while Vellore averaged 61 — a 3-point (5%) gap, with Hubli-Dharwad the more polluted and Vellore the cleaner of the two. On 298 days when both cities reported, Vellore was cleaner on 195 of them; the average daily gap was 25 AQI points.
Seasonality & days
Hubli-Dharwad peaks in February, while Vellore peaks in December. Hubli-Dharwad logged 0% Severe days and 74.1% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Hubli-Dharwad 180 days, Vellore 23 days.
Year-over-year progress
Hubli-Dharwad has improved by 18 AQI points (22%) from 2018 to 2024; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Hubli-Dharwad reached AQI 500 at Deshpande Nagar (KSPCB) on 2018-05-21; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Hubli-Dharwad spans 2 CPCB stations with a 6-point spread (min 73, max 79); Vellore spans 1 stations with a 0-point spread (min 70, max 70).
Verdict
🏆 Hubli-Dharwad has better air quality with an AQI of 9 compared to Vellore's 13.