Puducherry vs Salem
Side-by-side air quality comparison between Puducherry and Salem.
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 Salem averaged 68 — a 13-point (24%) gap, with Salem the more polluted and Puducherry the cleaner of the two. On 377 days when both cities reported, Puducherry was cleaner on 244 of them; the average daily gap was 25 AQI points.
Seasonality & days
Puducherry peaks in December, while Salem peaks in April. Puducherry logged 0% Severe days and 95.4% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Puducherry 117 days, Salem 17 days.
Year-over-year progress
Puducherry has worsened by 1 AQI points (1.9%) from 2021 to 2024; Salem has improved by 5 AQI points (6.8%) over the same window. The worst recorded day for Puducherry reached AQI 274 at Jawahar Nagar (PPCC) on 2022-10-25; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Puducherry spans 1 CPCB stations with a 0-point spread (min 56, max 56); Salem spans 1 stations with a 0-point spread (min 73, max 73).