Puducherry vs Shillong
Side-by-side air quality comparison between Puducherry 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, Puducherry averaged an AQI of 55 while Shillong averaged 75 — a 20-point (36%) gap, with Shillong the more polluted and Puducherry the cleaner of the two. On 640 days when both cities reported, Shillong was cleaner on 437 of them; the average daily gap was 35 AQI points.
Seasonality & days
Puducherry peaks in December, while Shillong peaks in February. Puducherry logged 0% Severe days and 95.4% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Puducherry 117 days, Shillong 113 days.
Year-over-year progress
Puducherry has worsened by 1 AQI points (1.9%) from 2021 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Puducherry reached AQI 274 at Jawahar Nagar (PPCC) on 2022-10-25; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Puducherry spans 1 CPCB stations with a 0-point spread (min 56, max 56); Shillong spans 2 stations with a 2-point spread (min 42, max 44).