Salem vs Tiruchirappalli
Side-by-side air quality comparison between Salem and Tiruchirappalli.
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 Tiruchirappalli averaged 50 — a 18-point (36%) gap, with Salem the more polluted and Tiruchirappalli the cleaner of the two. On 43 days when both cities reported, Tiruchirappalli was cleaner on 39 of them; the average daily gap was 28 AQI points.
Seasonality & days
Salem peaks in April, while Tiruchirappalli peaks in January. Salem logged 0% Severe days and 87.1% Good-or-Satisfactory days; Tiruchirappalli was 0% Severe and 96.5% Good-or-Satisfactory. Longest clean-air streaks: Salem 17 days, Tiruchirappalli 46 days.
Year-over-year progress
Salem has improved by 5 AQI points (6.8%) from 2022 to 2024; Tiruchirappalli has improved by 23 AQI points (31.5%) over the same window. The worst recorded day for Salem reached AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15; Tiruchirappalli hit AQI 114 at St Joseph College (TNPCB) on 2024-01-14.
Station-level disparity
Salem spans 1 CPCB stations with a 0-point spread (min 73, max 73); Tiruchirappalli spans 1 stations with a 0-point spread (min 52, max 52).