Sonipat vs Vellore
Side-by-side air quality comparison between Sonipat 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 | Sonipat | Vellore |
|---|---|---|
| PM2.5(µg/m³) | 80.80 | 7.00 |
| PM10(µg/m³) | 143.90 | 8.40 |
| NO₂(µg/m³) | 41.80 | 8.50 |
| SO₂(µg/m³) | 33.00 | 4.30 |
| O₃(µg/m³) | 63.00 | 44.00 |
| CO(µg/m³) | 675.00 | 141.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Sonipat averaged an AQI of 134 while Vellore averaged 61 — a 73-point (120%) gap, with Sonipat the more polluted and Vellore the cleaner of the two. On 235 days when both cities reported, Vellore was cleaner on 211 of them; the average daily gap was 95 AQI points.
Seasonality & days
Sonipat peaks in November, while Vellore peaks in December. Sonipat logged 0.8% Severe days and 26.5% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Sonipat 21 days, Vellore 23 days.
Year-over-year progress
Sonipat has improved by 220 AQI points (62.1%) from 2018 to 2024; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Sonipat reached AQI 455 at Murthal (HSPCB) on 2023-11-03; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Sonipat spans 1 CPCB stations with a 0-point spread (min 162, max 162); 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 Sonipat's 170. That's a significant difference of 158 points.