Kochi vs Vellore
Side-by-side air quality comparison between Kochi 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 | Kochi | Vellore |
|---|---|---|
| PM2.5(µg/m³) | 7.80 | 8.00 |
| PM10(µg/m³) | 9.90 | 10.00 |
| NO₂(µg/m³) | 10.00 | 11.40 |
| SO₂(µg/m³) | 2.70 | 4.50 |
| O₃(µg/m³) | 24.00 | 41.00 |
| CO(µg/m³) | 125.00 | 175.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kochi averaged an AQI of 91 while Vellore averaged 61 — a 30-point (49%) gap, with Kochi the more polluted and Vellore the cleaner of the two. On 111 days when both cities reported, Vellore was cleaner on 87 of them; the average daily gap was 61 AQI points.
Seasonality & days
Kochi peaks in January, while Vellore peaks in December. Kochi logged 0% Severe days and 70.9% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Kochi 80 days, Vellore 23 days.
Year-over-year progress
Kochi has worsened by 7 AQI points (8.3%) from 2020 to 2024; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Kochi reached AQI 293 at Vyttila Kochi (PCB) on 2022-12-08; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Kochi spans 1 CPCB stations with a 0-point spread (min 88, max 88); Vellore spans 1 stations with a 0-point spread (min 70, max 70).
Verdict
Both Kochi and Vellore have the same AQI of 13 right now.