Palwal vs Vellore
Side-by-side air quality comparison between Palwal 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 | Palwal | Vellore |
|---|---|---|
| PM2.5(µg/m³) | 58.70 | 8.00 |
| PM10(µg/m³) | 129.50 | 10.00 |
| NO₂(µg/m³) | 23.70 | 11.40 |
| SO₂(µg/m³) | 9.30 | 4.50 |
| O₃(µg/m³) | 51.00 | 41.00 |
| CO(µg/m³) | 502.00 | 175.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Palwal averaged an AQI of 95 while Vellore averaged 61 — a 34-point (56%) gap, with Palwal the more polluted and Vellore the cleaner of the two. On 277 days when both cities reported, Vellore was cleaner on 201 of them; the average daily gap was 44 AQI points.
Seasonality & days
Palwal peaks in November, while Vellore peaks in December. Palwal logged 0.2% Severe days and 47.800000000000004% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Palwal 37 days, Vellore 23 days.
Year-over-year progress
Palwal has improved by 91 AQI points (48.9%) from 2019 to 2024; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Palwal reached AQI 465 at Shyam Nagar (HSPCB) on 2019-11-14; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Palwal spans 1 CPCB stations with a 0-point spread (min 120, max 120); Vellore spans 1 stations with a 0-point spread (min 70, max 70).
Verdict
🏆 Vellore has better air quality with an AQI of 13 compared to Palwal's 120. That's a significant difference of 107 points.