Karur vs Vellore
Side-by-side air quality comparison between Karur and Vellore.
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 | Karur | Vellore |
|---|---|---|
| PM2.5(µg/m³) | 3.80 | 8.00 |
| PM10(µg/m³) | 4.40 | 10.00 |
| NO₂(µg/m³) | 7.30 | 11.40 |
| SO₂(µg/m³) | 2.70 | 4.50 |
| O₃(µg/m³) | 37.00 | 41.00 |
| CO(µg/m³) | 117.00 | 175.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Karur averaged an AQI of 71 while Vellore averaged 61 — a 10-point (16%) gap, with Karur the more polluted and Vellore the cleaner of the two. On 53 days when both cities reported, Karur was cleaner on 33 of them; the average daily gap was 26 AQI points.
Seasonality & days
Both cities see their worst air in December on average. Karur logged 0% Severe days and 80.3% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Karur 34 days, Vellore 23 days.
Year-over-year progress
The worst recorded day for Karur reached AQI 149 at Kamadenu Nagar (TNPCB) on 2024-11-26; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Karur spans 1 CPCB stations with a 0-point spread (min 71, max 71); Vellore spans 1 stations with a 0-point spread (min 70, max 70).
Verdict
🏆 Karur has better air quality with an AQI of 6 compared to Vellore's 13.