Chennai vs Virudhunagar
Side-by-side air quality comparison between Chennai 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
Pollutant-level comparison (PM2.5, PM10, O3, NO2, SO2, CO)▾
| Pollutant | Chennai | Virudhunagar |
|---|---|---|
| PM2.5(µg/m³) | 13.90 | 5.00 |
| PM10(µg/m³) | 15.30 | 6.00 |
| NO₂(µg/m³) | 15.00 | 7.30 |
| SO₂(µg/m³) | 9.10 | 3.00 |
| O₃(µg/m³) | 56.00 | 33.00 |
| CO(µg/m³) | 316.00 | 124.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chennai averaged an AQI of 68 while Virudhunagar averaged 52 — a 16-point (31%) gap, with Chennai the more polluted and Virudhunagar the cleaner of the two. On 195 days when both cities reported, Virudhunagar was cleaner on 180 of them; the average daily gap was 50 AQI points.
Seasonality & days
Chennai peaks in December, while Virudhunagar peaks in November. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Virudhunagar was 0% Severe and 92.3% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Virudhunagar 31 days.
Year-over-year progress
The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Virudhunagar hit AQI 173 at Collectorate Office (TNPCB) on 2024-11-07.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Virudhunagar spans 1 stations with a 0-point spread (min 52, max 52).
Verdict
🏆 Virudhunagar has better air quality with an AQI of 8 compared to Chennai's 23.