Hubli-Dharwad vs Tirunelveli
Side-by-side air quality comparison between Hubli-Dharwad and Tirunelveli.
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 | Tirunelveli |
|---|---|---|
| PM2.5(µg/m³) | 5.30 | 4.40 |
| PM10(µg/m³) | 8.40 | 5.20 |
| NO₂(µg/m³) | 5.20 | 5.50 |
| SO₂(µg/m³) | 1.20 | 1.80 |
| O₃(µg/m³) | 39.00 | 30.00 |
| CO(µg/m³) | 117.00 | 151.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hubli-Dharwad averaged an AQI of 64 while Tirunelveli averaged 30 — a 34-point (113%) gap, with Hubli-Dharwad the more polluted and Tirunelveli the cleaner of the two. On 117 days when both cities reported, Tirunelveli was cleaner on 114 of them; the average daily gap was 32 AQI points.
Seasonality & days
Hubli-Dharwad peaks in February, while Tirunelveli peaks in October. Hubli-Dharwad logged 0% Severe days and 74.1% Good-or-Satisfactory days; Tirunelveli was 0% Severe and 100% Good-or-Satisfactory. Longest clean-air streaks: Hubli-Dharwad 180 days, Tirunelveli 31 days.
Year-over-year progress
The worst recorded day for Hubli-Dharwad reached AQI 500 at Deshpande Nagar (KSPCB) on 2018-05-21; Tirunelveli hit AQI 42 at Municipal Corporation Office (TNPCB) on 2024-10-30.
Station-level disparity
Hubli-Dharwad spans 2 CPCB stations with a 6-point spread (min 73, max 79); Tirunelveli spans 1 stations with a 0-point spread (min 30, max 30).
Verdict
🏆 Tirunelveli has better air quality with an AQI of 7 compared to Hubli-Dharwad's 9.