Chennai vs Gadag
Side-by-side air quality comparison between Chennai and Gadag.
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 | Chennai | Gadag |
|---|---|---|
| PM2.5(µg/m³) | 11.70 | 6.00 |
| PM10(µg/m³) | 13.10 | 10.40 |
| NO₂(µg/m³) | 14.20 | 5.10 |
| SO₂(µg/m³) | 10.10 | 1.30 |
| O₃(µg/m³) | 56.00 | 43.00 |
| CO(µg/m³) | 308.00 | 119.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chennai averaged an AQI of 68 while Gadag averaged 53 — a 15-point (28%) gap, with Chennai the more polluted and Gadag the cleaner of the two. On 778 days when both cities reported, Gadag was cleaner on 724 of them; the average daily gap was 55 AQI points.
Seasonality & days
Chennai peaks in December, while Gadag peaks in March. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Gadag was 0.3% Severe and 96.1% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Gadag 50 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Gadag has worsened by 10 AQI points (23.3%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Gadag hit AQI 500 at Panchal Nagar (KSPCB) on 2022-12-10.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Gadag spans 1 stations with a 0-point spread (min 54, max 54).
Verdict
🏆 Gadag has better air quality with an AQI of 10 compared to Chennai's 20.