Nalbāri vs Vellore
Side-by-side air quality comparison between Nalbāri 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 | Nalbāri | Vellore |
|---|---|---|
| PM2.5(µg/m³) | 54.50 | 7.00 |
| PM10(µg/m³) | 61.20 | 8.40 |
| NO₂(µg/m³) | 6.50 | 8.50 |
| SO₂(µg/m³) | 5.80 | 4.30 |
| O₃(µg/m³) | 123.00 | 44.00 |
| CO(µg/m³) | 407.00 | 141.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Nalbāri averaged an AQI of 129 while Vellore averaged 61 — a 68-point (111%) gap, with Nalbāri the more polluted and Vellore the cleaner of the two. On 235 days when both cities reported, Vellore was cleaner on 204 of them; the average daily gap was 85 AQI points.
Seasonality & days
Nalbāri peaks in January, while Vellore peaks in December. Nalbāri logged 0% Severe days and 41% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Nalbāri 18 days, Vellore 23 days.
Year-over-year progress
Nalbāri has improved by 72 AQI points (35.8%) from 2022 to 2024; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Nalbāri reached AQI 384 at Bata Chowk (PCBA) on 2024-01-08; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Nalbāri spans 1 CPCB stations with a 0-point spread (min 141, max 141); 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 Nalbāri's 91. That's a significant difference of 79 points.