Kannur vs Vellore
Side-by-side air quality comparison between Kannur 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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kannur averaged an AQI of 65 while Vellore averaged 61 — a 4-point (7%) gap, with Kannur the more polluted and Vellore the cleaner of the two. On 185 days when both cities reported, Kannur was cleaner on 104 of them; the average daily gap was 30 AQI points.
Seasonality & days
Kannur peaks in February, while Vellore peaks in December. Kannur logged 0% Severe days and 92% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Kannur 103 days, Vellore 23 days.
Year-over-year progress
Kannur has worsened by 11 AQI points (20.4%) from 2020 to 2024; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Kannur reached AQI 258 at Thavakkara Kannur (PCB) on 2021-04-14; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Kannur spans 1 CPCB stations with a 0-point spread (min 66, max 66); Vellore spans 1 stations with a 0-point spread (min 70, max 70).