Gummidipoondi vs Shillong
Side-by-side air quality comparison between Gummidipoondi and Shillong.
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 Shillong averaged 75 — a 32-point (43%) gap, with Gummidipoondi the more polluted and Shillong the cleaner of the two. On 424 days when both cities reported, Shillong was cleaner on 271 of them; the average daily gap was 46 AQI points.
Seasonality & days
Gummidipoondi peaks in November, while Shillong peaks in February. Gummidipoondi logged 0% Severe days and 59.1% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Gummidipoondi 49 days, Shillong 113 days.
Year-over-year progress
Gummidipoondi has worsened by 8 AQI points (8.1%) from 2021 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Gummidipoondi reached AQI 326 at Anthoni Pillai Nagar (TNPCB) on 2023-12-22; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Gummidipoondi spans 1 CPCB stations with a 0-point spread (min 99, max 99); Shillong spans 2 stations with a 2-point spread (min 42, max 44).