Aizawl vs Vellore
Side-by-side air quality comparison between Aizawl 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 | Aizawl | Vellore |
|---|---|---|
| PM2.5(µg/m³) | 23.70 | 7.00 |
| PM10(µg/m³) | 37.30 | 8.40 |
| NO₂(µg/m³) | 2.80 | 8.50 |
| SO₂(µg/m³) | 3.20 | 4.30 |
| O₃(µg/m³) | 83.00 | 44.00 |
| CO(µg/m³) | 222.00 | 141.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Aizawl averaged an AQI of 46 while Vellore averaged 61 — a 15-point (33%) gap, with Vellore the more polluted and Aizawl the cleaner of the two. On 284 days when both cities reported, Aizawl was cleaner on 212 of them; the average daily gap was 37 AQI points.
Seasonality & days
Aizawl peaks in March, while Vellore peaks in December. Aizawl logged 0% Severe days and 94.2% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Aizawl 76 days, Vellore 23 days.
Year-over-year progress
Aizawl has worsened by 16 AQI points (53.3%) from 2020 to 2024; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Aizawl reached AQI 208 at Sikulpuikawn Aizawl (PCB) on 2021-01-20; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Aizawl spans 1 CPCB stations with a 0-point spread (min 43, max 43); 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 Aizawl's 40.