Kolār vs Vellore
Side-by-side air quality comparison between Kolār 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 | Kolār | Vellore |
|---|---|---|
| PM2.5(µg/m³) | 5.90 | 8.00 |
| PM10(µg/m³) | 7.20 | 10.00 |
| NO₂(µg/m³) | 10.90 | 11.40 |
| SO₂(µg/m³) | 4.70 | 4.50 |
| O₃(µg/m³) | 35.00 | 41.00 |
| CO(µg/m³) | 189.00 | 175.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kolār averaged an AQI of 65 while Vellore averaged 61 — a 4-point (7%) gap, with Kolār the more polluted and Vellore the cleaner of the two. On 202 days when both cities reported, Vellore was cleaner on 123 of them; the average daily gap was 27 AQI points.
Seasonality & days
Kolār peaks in September, while Vellore peaks in December. Kolār logged 0.9% Severe days and 85.30000000000001% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Kolār 17 days, Vellore 23 days.
Year-over-year progress
Kolār has improved by 56 AQI points (46.3%) from 2018 to 2024; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Kolār reached AQI 500 at Tamaka Ind Area (KSPCB) on 2018-09-18; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Kolār 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
🏆 Kolār has better air quality with an AQI of 10 compared to Vellore's 13.