Kozhikode vs Vellore
Side-by-side air quality comparison between Kozhikode and Vellore.
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 | Kozhikode | Vellore |
|---|---|---|
| PM2.5(µg/m³) | 4.60 | 8.00 |
| PM10(µg/m³) | 10.30 | 10.00 |
| NO₂(µg/m³) | 0.50 | 11.40 |
| SO₂(µg/m³) | 0.30 | 4.50 |
| O₃(µg/m³) | 64.00 | 41.00 |
| CO(µg/m³) | 217.00 | 175.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2023, Kozhikode averaged an AQI of 78 while Vellore averaged 61 — a 17-point (28%) gap, with Kozhikode the more polluted and Vellore the cleaner of the two. On 55 days when both cities reported, Kozhikode was cleaner on 32 of them; the average daily gap was 25 AQI points.
Seasonality & days
Kozhikode peaks in January, while Vellore peaks in December. Kozhikode logged 0.1% Severe days and 99% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Kozhikode 83 days, Vellore 23 days.
Year-over-year progress
Kozhikode has worsened by 29 AQI points (59.2%) from 2020 to 2023; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Kozhikode reached AQI 417 at Palayam Kozhikode (PCB) on 2021-01-25; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Kozhikode spans 1 CPCB stations with a 0-point spread (min 59, max 59); Vellore spans 1 stations with a 0-point spread (min 70, max 70).
Verdict
🏆 Kozhikode has better air quality with an AQI of 10 compared to Vellore's 13.