Hubli-Dharwad vs Nagapattinam
Side-by-side air quality comparison between Hubli-Dharwad and Nagapattinam.
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 | Nagapattinam |
|---|---|---|
| PM2.5(µg/m³) | 5.50 | 12.00 |
| PM10(µg/m³) | 8.80 | 15.60 |
| NO₂(µg/m³) | 6.30 | 10.70 |
| SO₂(µg/m³) | 1.20 | 3.80 |
| O₃(µg/m³) | 36.00 | 35.00 |
| CO(µg/m³) | 112.00 | 206.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hubli-Dharwad averaged an AQI of 64 while Nagapattinam averaged 60 — a 4-point (7%) gap, with Hubli-Dharwad the more polluted and Nagapattinam the cleaner of the two. On 45 days when both cities reported, Nagapattinam was cleaner on 30 of them; the average daily gap was 31 AQI points.
Seasonality & days
Hubli-Dharwad peaks in February, while Nagapattinam peaks in November. Hubli-Dharwad logged 0% Severe days and 74.1% Good-or-Satisfactory days; Nagapattinam was 0% Severe and 91.5% Good-or-Satisfactory. Longest clean-air streaks: Hubli-Dharwad 180 days, Nagapattinam 8 days.
Year-over-year progress
The worst recorded day for Hubli-Dharwad reached AQI 500 at Deshpande Nagar (KSPCB) on 2018-05-21; Nagapattinam hit AQI 113 at Velippalayam (TNPCB) on 2024-12-16.
Station-level disparity
Hubli-Dharwad spans 2 CPCB stations with a 6-point spread (min 73, max 79); Nagapattinam spans 1 stations with a 0-point spread (min 60, max 60).
Verdict
🏆 Hubli-Dharwad has better air quality with an AQI of 9 compared to Nagapattinam's 20.