Coimbatore vs Madurai
Side-by-side air quality comparison between Coimbatore and Madurai.
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 | Madurai |
|---|---|---|
| PM2.5(µg/m³) | 2.50 | 13.70 |
| PM10(µg/m³) | 3.00 | 15.40 |
| NO₂(µg/m³) | 4.60 | 23.90 |
| SO₂(µg/m³) | 2.00 | 4.60 |
| O₃(µg/m³) | 40.00 | 10.00 |
| CO(µg/m³) | 163.00 | 188.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Madurai averaged 48 — a 18-point (38%) gap, with Coimbatore the more polluted and Madurai the cleaner of the two. On 76 days when both cities reported, Madurai was cleaner on 68 of them; the average daily gap was 41 AQI points.
Seasonality & days
Coimbatore peaks in November, while Madurai peaks in December. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Madurai was 0% Severe and 98.7% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Madurai 17 days.
Year-over-year progress
The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Madurai hit AQI 105 at Uchapatti (TNPCB) on 2024-11-26.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Madurai spans 1 stations with a 0-point spread (min 48, max 48).
Verdict
🏆 Coimbatore has better air quality with an AQI of 4 compared to Madurai's 23.