Coimbatore vs Dindigul
Side-by-side air quality comparison between Coimbatore and Dindigul.
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 | Dindigul |
|---|---|---|
| PM2.5(µg/m³) | 2.70 | 20.10 |
| PM10(µg/m³) | 2.90 | 21.60 |
| NO₂(µg/m³) | 4.50 | 20.20 |
| SO₂(µg/m³) | 2.20 | 3.40 |
| O₃(µg/m³) | 43.00 | 23.00 |
| CO(µg/m³) | 159.00 | 209.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Dindigul averaged 61 — a 5-point (8%) gap, with Coimbatore the more polluted and Dindigul the cleaner of the two. On 155 days when both cities reported, Dindigul was cleaner on 108 of them; the average daily gap was 31 AQI points.
Seasonality & days
Coimbatore peaks in November, while Dindigul peaks in February. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Dindigul was 0% Severe and 67.3% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Dindigul 22 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Dindigul has improved by 29 AQI points (32.2%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Dindigul hit AQI 352 at Mendonsa Colony (TNPCB) on 2023-03-12.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Dindigul spans 1 stations with a 0-point spread (min 102, max 102).
Verdict
🏆 Coimbatore has better air quality with an AQI of 5 compared to Dindigul's 34.