Surat vs Vellore
Side-by-side air quality comparison between Surat 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 | Surat | Vellore |
|---|---|---|
| PM2.5(µg/m³) | 25.70 | 7.00 |
| PM10(µg/m³) | 47.30 | 8.40 |
| NO₂(µg/m³) | 22.40 | 8.50 |
| SO₂(µg/m³) | 40.70 | 4.30 |
| O₃(µg/m³) | 35.00 | 44.00 |
| CO(µg/m³) | 266.00 | 141.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Surat averaged an AQI of 83 while Vellore averaged 61 — a 22-point (36%) gap, with Surat the more polluted and Vellore the cleaner of the two. On 223 days when both cities reported, Vellore was cleaner on 161 of them; the average daily gap was 69 AQI points.
Seasonality & days
Surat peaks in November, while Vellore peaks in December. Surat logged 0% Severe days and 55.9% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Surat 55 days, Vellore 23 days.
Year-over-year progress
Surat has improved by 139 AQI points (62.6%) from 2022 to 2024; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Surat reached AQI 384 at Science Center (SMC) on 2023-08-19; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Surat spans 1 CPCB stations with a 0-point spread (min 123, max 123); 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 Surat's 47.