Salem vs Virudhunagar
Side-by-side air quality comparison between Salem and Virudhunagar.
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 Virudhunagar averaged 52 — a 16-point (31%) gap, with Salem the more polluted and Virudhunagar the cleaner of the two. On 103 days when both cities reported, Virudhunagar was cleaner on 86 of them; the average daily gap was 23 AQI points.
Seasonality & days
Salem peaks in April, while Virudhunagar peaks in November. Salem logged 0% Severe days and 87.1% Good-or-Satisfactory days; Virudhunagar was 0% Severe and 92.3% Good-or-Satisfactory. Longest clean-air streaks: Salem 17 days, Virudhunagar 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; Virudhunagar hit AQI 173 at Collectorate Office (TNPCB) on 2024-11-07.
Station-level disparity
Salem spans 1 CPCB stations with a 0-point spread (min 73, max 73); Virudhunagar spans 1 stations with a 0-point spread (min 52, max 52).