Coimbatore vs Kozhikode
Side-by-side air quality comparison between Coimbatore and Kozhikode.
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 | Kozhikode |
|---|---|---|
| PM2.5(µg/m³) | 2.50 | 4.60 |
| PM10(µg/m³) | 3.00 | 10.30 |
| NO₂(µg/m³) | 4.60 | 0.50 |
| SO₂(µg/m³) | 2.00 | 0.30 |
| O₃(µg/m³) | 40.00 | 64.00 |
| CO(µg/m³) | 163.00 | 217.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Kozhikode averaged 78 — a 12-point (18%) gap, with Kozhikode the more polluted and Coimbatore the cleaner of the two. On 479 days when both cities reported, Kozhikode was cleaner on 258 of them; the average daily gap was 24 AQI points.
Seasonality & days
Coimbatore peaks in November, while Kozhikode peaks in January. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Kozhikode was 0.1% Severe and 99% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Kozhikode 83 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Kozhikode has worsened by 29 AQI points (59.2%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Kozhikode hit AQI 417 at Palayam Kozhikode (PCB) on 2021-01-25.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Kozhikode spans 1 stations with a 0-point spread (min 59, max 59).
Verdict
🏆 Coimbatore has better air quality with an AQI of 4 compared to Kozhikode's 10.