Ghaziabad vs Vellore
Side-by-side air quality comparison between Ghaziabad 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 | Ghaziabad | Vellore |
|---|---|---|
| PM2.5(µg/m³) | 69.60 | 7.00 |
| PM10(µg/m³) | 96.40 | 8.40 |
| NO₂(µg/m³) | 27.40 | 8.50 |
| SO₂(µg/m³) | 11.00 | 4.30 |
| O₃(µg/m³) | 65.00 | 44.00 |
| CO(µg/m³) | 542.00 | 141.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ghaziabad averaged an AQI of 177 while Vellore averaged 61 — a 116-point (190%) gap, with Ghaziabad the more polluted and Vellore the cleaner of the two. On 234 days when both cities reported, Vellore was cleaner on 231 of them; the average daily gap was 160 AQI points.
Seasonality & days
Ghaziabad peaks in November, while Vellore peaks in December. Ghaziabad logged 12.2% Severe days and 13.700000000000001% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Ghaziabad 19 days, Vellore 23 days.
Year-over-year progress
Ghaziabad has improved by 115 AQI points (39.4%) from 2017 to 2024; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Ghaziabad reached AQI 500 at Vasundhara (UPPCB) on 2017-12-21; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Ghaziabad spans 4 CPCB stations with a 30-point spread (min 198, max 228); Vellore spans 1 stations with a 0-point spread (min 70, max 70).
Verdict
🏆 Vellore has better air quality with an AQI of 12 compared to Ghaziabad's 133. That's a significant difference of 121 points.