Bhagalpur vs Coimbatore
Side-by-side air quality comparison between Bhagalpur and Coimbatore.
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 | Coimbatore |
|---|---|---|
| PM2.5(µg/m³) | 61.20 | 2.50 |
| PM10(µg/m³) | 65.90 | 3.00 |
| NO₂(µg/m³) | 25.30 | 4.60 |
| SO₂(µg/m³) | 25.40 | 2.00 |
| O₃(µg/m³) | 53.00 | 40.00 |
| CO(µg/m³) | 736.00 | 163.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bhagalpur averaged an AQI of 164 while Coimbatore averaged 66 — a 98-point (148%) gap, with Bhagalpur the more polluted and Coimbatore the cleaner of the two. On 576 days when both cities reported, Coimbatore was cleaner on 553 of them; the average daily gap was 129 AQI points.
Seasonality & days
Bhagalpur peaks in January, while Coimbatore peaks in November. Bhagalpur logged 1.9% Severe days and 19.9% Good-or-Satisfactory days; Coimbatore was 0% Severe and 90.5% Good-or-Satisfactory. Longest clean-air streaks: Bhagalpur 20 days, Coimbatore 32 days.
Year-over-year progress
Bhagalpur has improved by 123 AQI points (42.9%) from 2021 to 2024; Coimbatore has improved by 5 AQI points (7%) over the same window. The worst recorded day for Bhagalpur reached AQI 451 at Mayaganj (BSPCB) on 2022-12-30; Coimbatore hit AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28.
Station-level disparity
Bhagalpur spans 2 CPCB stations with a 26-point spread (min 170, max 196); Coimbatore spans 2 stations with a 1-point spread (min 63, max 64).
Verdict
🏆 Coimbatore has better air quality with an AQI of 4 compared to Bhagalpur's 105. That's a significant difference of 101 points.