Coimbatore vs Hubli-Dharwad
Side-by-side air quality comparison between Coimbatore and Hubli-Dharwad.
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 | Coimbatore | Hubli-Dharwad |
|---|---|---|
| PM2.5(µg/m³) | 2.70 | 5.30 |
| PM10(µg/m³) | 2.90 | 8.40 |
| NO₂(µg/m³) | 4.50 | 5.20 |
| SO₂(µg/m³) | 2.20 | 1.20 |
| O₃(µg/m³) | 43.00 | 39.00 |
| CO(µg/m³) | 159.00 | 117.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Hubli-Dharwad averaged 64 — a 2-point (3%) gap, with Coimbatore the more polluted and Hubli-Dharwad the cleaner of the two. On 845 days when both cities reported, Coimbatore was cleaner on 533 of them; the average daily gap was 26 AQI points.
Seasonality & days
Coimbatore peaks in November, while Hubli-Dharwad peaks in February. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Hubli-Dharwad was 0% Severe and 74.1% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Hubli-Dharwad 180 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Hubli-Dharwad has improved by 18 AQI points (22%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Hubli-Dharwad hit AQI 500 at Deshpande Nagar (KSPCB) on 2018-05-21.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Hubli-Dharwad spans 2 stations with a 6-point spread (min 73, max 79).
Verdict
🏆 Coimbatore has better air quality with an AQI of 5 compared to Hubli-Dharwad's 9.