Shillong vs Vellore
Side-by-side air quality comparison between Shillong 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, Shillong averaged an AQI of 75 while Vellore averaged 61 — a 14-point (23%) gap, with Shillong the more polluted and Vellore the cleaner of the two. On 146 days when both cities reported, Shillong was cleaner on 84 of them; the average daily gap was 37 AQI points.
Seasonality & days
Shillong peaks in February, while Vellore peaks in December. Shillong logged 0% Severe days and 92% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Shillong 113 days, Vellore 23 days.
Year-over-year progress
Shillong has worsened by 41 AQI points (120.6%) from 2019 to 2024; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Shillong reached AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Shillong spans 2 CPCB stations with a 2-point spread (min 42, max 44); Vellore spans 1 stations with a 0-point spread (min 70, max 70).