Chennai vs Madikeri
Side-by-side air quality comparison between Chennai and Madikeri.
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 | Madikeri |
|---|---|---|
| PM2.5(µg/m³) | 17.70 | 2.50 |
| PM10(µg/m³) | 23.50 | 4.20 |
| NO₂(µg/m³) | 4.00 | 2.10 |
| SO₂(µg/m³) | 8.10 | 0.50 |
| O₃(µg/m³) | 138.00 | 55.00 |
| CO(µg/m³) | 213.00 | 111.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chennai averaged an AQI of 68 while Madikeri averaged 35 — a 33-point (94%) gap, with Chennai the more polluted and Madikeri the cleaner of the two. On 1092 days when both cities reported, Madikeri was cleaner on 1047 of them; the average daily gap was 62 AQI points.
Seasonality & days
Chennai peaks in December, while Madikeri peaks in February. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Madikeri was 0% Severe and 98.8% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Madikeri 126 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Madikeri has improved by 26 AQI points (42.6%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Madikeri hit AQI 163 at Stuart Hill (KSPCB) on 2020-12-27.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Madikeri spans 1 stations with a 0-point spread (min 42, max 42).
Verdict
🏆 Madikeri has better air quality with an AQI of 4 compared to Chennai's 30.