Salem vs Tirunelveli
Side-by-side air quality comparison between Salem and Tirunelveli.
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 Tirunelveli averaged 30 — a 38-point (127%) gap, with Salem the more polluted and Tirunelveli the cleaner of the two. On 70 days when both cities reported, Tirunelveli was cleaner on 62 of them; the average daily gap was 23 AQI points.
Seasonality & days
Salem peaks in April, while Tirunelveli peaks in October. Salem logged 0% Severe days and 87.1% Good-or-Satisfactory days; Tirunelveli was 0% Severe and 100% Good-or-Satisfactory. Longest clean-air streaks: Salem 17 days, Tirunelveli 31 days.
Year-over-year progress
The worst recorded day for Salem reached AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15; Tirunelveli hit AQI 42 at Municipal Corporation Office (TNPCB) on 2024-10-30.
Station-level disparity
Salem spans 1 CPCB stations with a 0-point spread (min 73, max 73); Tirunelveli spans 1 stations with a 0-point spread (min 30, max 30).