Bhagalpur vs Vellore
Side-by-side air quality comparison between Bhagalpur 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 | Bhagalpur | Vellore |
|---|---|---|
| PM2.5(µg/m³) | 56.20 | 7.00 |
| PM10(µg/m³) | 62.60 | 8.40 |
| NO₂(µg/m³) | 14.10 | 8.50 |
| SO₂(µg/m³) | 24.00 | 4.30 |
| O₃(µg/m³) | 121.00 | 44.00 |
| CO(µg/m³) | 527.00 | 141.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bhagalpur averaged an AQI of 164 while Vellore averaged 61 — a 103-point (169%) gap, with Bhagalpur the more polluted and Vellore the cleaner of the two. On 300 days when both cities reported, Vellore was cleaner on 292 of them; the average daily gap was 133 AQI points.
Seasonality & days
Bhagalpur peaks in January, while Vellore peaks in December. Bhagalpur logged 1.9% Severe days and 19.9% Good-or-Satisfactory days; Vellore was 0% Severe and 83.5% Good-or-Satisfactory. Longest clean-air streaks: Bhagalpur 20 days, Vellore 23 days.
Year-over-year progress
Bhagalpur has improved by 123 AQI points (42.9%) from 2021 to 2024; Vellore has improved by 10 AQI points (14.1%) over the same window. The worst recorded day for Bhagalpur reached AQI 451 at Mayaganj (BSPCB) on 2022-12-30; Vellore hit AQI 245 at Vasanthapuram (TNPCB) on 2024-01-14.
Station-level disparity
Bhagalpur spans 2 CPCB stations with a 26-point spread (min 170, max 196); 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 Bhagalpur's 94. That's a significant difference of 82 points.