Noida vs Vellore
Side-by-side air quality comparison between Noida 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 | Noida | Vellore |
|---|---|---|
| PM2.5(µg/m³) | 69.60 | 7.00 |
| PM10(µg/m³) | 137.40 | 8.40 |
| NO₂(µg/m³) | 30.10 | 8.50 |
| SO₂(µg/m³) | 17.90 | 4.30 |
| O₃(µg/m³) | 65.00 | 44.00 |
| CO(µg/m³) | 562.00 | 141.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Noida averaged an AQI of 182 while Vellore averaged 61 — a 121-point (198%) gap, with Noida the more polluted and Vellore the cleaner of the two. On 234 days when both cities reported, Vellore was cleaner on 233 of them; the average daily gap was 161 AQI points.
Seasonality & days
Noida peaks in November, while Vellore peaks in December. Noida logged 8.9% Severe days and 16.5% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Noida 14 days, Vellore 23 days.
Year-over-year progress
Noida has improved by 79 AQI points (30.3%) from 2017 to 2024; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Noida reached AQI 500 at Sector-1 (UPPCB) on 2019-11-01; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Noida spans 4 CPCB stations with a 15-point spread (min 195, max 210); 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 Noida's 133. That's a significant difference of 121 points.