Kollam vs Virudhunagar
Side-by-side air quality comparison between Kollam 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, Kollam averaged an AQI of 84 while Virudhunagar averaged 52 — a 32-point (62%) gap, with Kollam the more polluted and Virudhunagar the cleaner of the two. On 150 days when both cities reported, Virudhunagar was cleaner on 123 of them; the average daily gap was 41 AQI points.
Seasonality & days
Kollam peaks in January, while Virudhunagar peaks in November. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Virudhunagar was 0% Severe and 92.3% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Virudhunagar 31 days.
Year-over-year progress
The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Virudhunagar hit AQI 173 at Collectorate Office (TNPCB) on 2024-11-07.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Virudhunagar spans 1 stations with a 0-point spread (min 52, max 52).