Gummidipoondi vs Vellore
Side-by-side air quality comparison between Gummidipoondi 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, Gummidipoondi averaged an AQI of 107 while Vellore averaged 61 — a 46-point (75%) gap, with Gummidipoondi the more polluted and Vellore the cleaner of the two. On 255 days when both cities reported, Vellore was cleaner on 240 of them; the average daily gap was 53 AQI points.
Seasonality & days
Gummidipoondi peaks in November, while Vellore peaks in December. Gummidipoondi logged 0% Severe days and 59.1% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Gummidipoondi 49 days, Vellore 23 days.
Year-over-year progress
Gummidipoondi has worsened by 8 AQI points (8.1%) from 2021 to 2024; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Gummidipoondi reached AQI 326 at Anthoni Pillai Nagar (TNPCB) on 2023-12-22; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Gummidipoondi spans 1 CPCB stations with a 0-point spread (min 99, max 99); Vellore spans 1 stations with a 0-point spread (min 70, max 70).