Bettiah vs Vellore
Side-by-side air quality comparison between Bettiah 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 | Bettiah | Vellore |
|---|---|---|
| PM2.5(µg/m³) | 105.00 | 7.00 |
| PM10(µg/m³) | 116.60 | 8.40 |
| NO₂(µg/m³) | 41.60 | 8.50 |
| SO₂(µg/m³) | 13.00 | 4.30 |
| O₃(µg/m³) | 55.00 | 44.00 |
| CO(µg/m³) | 1389.00 | 141.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bettiah averaged an AQI of 127 while Vellore averaged 61 — a 66-point (108%) gap, with Bettiah the more polluted and Vellore the cleaner of the two. On 211 days when both cities reported, Vellore was cleaner on 186 of them; the average daily gap was 118 AQI points.
Seasonality & days
Bettiah peaks in November, while Vellore peaks in December. Bettiah logged 3.2% Severe days and 32.3% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Bettiah 20 days, Vellore 23 days.
Year-over-year progress
Bettiah has improved by 73 AQI points (36.5%) from 2021 to 2024; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Bettiah reached AQI 470 at Kamalnath Nagar (BSPCB) on 2023-01-01; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Bettiah spans 1 CPCB stations with a 0-point spread (min 173, max 173); 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 Bettiah's 251. That's a significant difference of 239 points.