Salem vs Shillong
Side-by-side air quality comparison between Salem 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, Salem averaged an AQI of 68 while Shillong averaged 75 — a 7-point (10%) gap, with Shillong the more polluted and Salem the cleaner of the two. On 132 days when both cities reported, Shillong was cleaner on 83 of them; the average daily gap was 37 AQI points.
Seasonality & days
Salem peaks in April, while Shillong peaks in February. Salem logged 0% Severe days and 87.1% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Salem 17 days, Shillong 113 days.
Year-over-year progress
Salem has improved by 5 AQI points (6.8%) from 2022 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Salem reached AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Salem spans 1 CPCB stations with a 0-point spread (min 73, max 73); Shillong spans 2 stations with a 2-point spread (min 42, max 44).