Ulhasnagar vs Virudhunagar
Side-by-side air quality comparison between Ulhasnagar 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 | Ulhasnagar | Virudhunagar |
|---|---|---|
| PM2.5(µg/m³) | 22.10 | 5.00 |
| PM10(µg/m³) | 40.40 | 6.00 |
| NO₂(µg/m³) | 23.10 | 7.30 |
| SO₂(µg/m³) | 21.70 | 3.00 |
| O₃(µg/m³) | 19.00 | 33.00 |
| CO(µg/m³) | 208.00 | 124.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ulhasnagar averaged an AQI of 117 while Virudhunagar averaged 52 — a 65-point (125%) gap, with Ulhasnagar the more polluted and Virudhunagar the cleaner of the two. On 187 days when both cities reported, Virudhunagar was cleaner on 175 of them; the average daily gap was 75 AQI points.
Seasonality & days
Ulhasnagar peaks in January, while Virudhunagar peaks in November. Ulhasnagar logged 0% Severe days and 46.9% Good-or-Satisfactory days; Virudhunagar was 0% Severe and 92.3% Good-or-Satisfactory. Longest clean-air streaks: Ulhasnagar 74 days, Virudhunagar 31 days.
Year-over-year progress
The worst recorded day for Ulhasnagar reached AQI 319 at Sidhi Vinayak Nagar (MPCB) on 2023-11-13; Virudhunagar hit AQI 173 at Collectorate Office (TNPCB) on 2024-11-07.
Station-level disparity
Ulhasnagar spans 1 CPCB stations with a 0-point spread (min 120, max 120); 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 Ulhasnagar's 40.