Bhagalpur vs Kalyān
Side-by-side air quality comparison between Bhagalpur and Kalyān.
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 | Kalyān |
|---|---|---|
| PM2.5(µg/m³) | 61.20 | 22.10 |
| PM10(µg/m³) | 65.90 | 40.40 |
| NO₂(µg/m³) | 25.30 | 23.10 |
| SO₂(µg/m³) | 25.40 | 21.70 |
| O₃(µg/m³) | 53.00 | 19.00 |
| CO(µg/m³) | 736.00 | 174.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bhagalpur averaged an AQI of 164 while Kalyān averaged 95 — a 69-point (73%) gap, with Bhagalpur the more polluted and Kalyān the cleaner of the two. On 681 days when both cities reported, Kalyān was cleaner on 561 of them; the average daily gap was 82 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Bhagalpur logged 1.9% Severe days and 19.9% Good-or-Satisfactory days; Kalyān was 0.1% Severe and 46.4% Good-or-Satisfactory. Longest clean-air streaks: Bhagalpur 20 days, Kalyān 78 days.
Year-over-year progress
Bhagalpur has improved by 123 AQI points (42.9%) from 2021 to 2024; Kalyān has improved by 4 AQI points (4%) over the same window. The worst recorded day for Bhagalpur reached AQI 451 at Mayaganj (BSPCB) on 2022-12-30; Kalyān hit AQI 414 at Khadakpada (MPCB) on 2022-01-24.
Station-level disparity
Bhagalpur spans 2 CPCB stations with a 26-point spread (min 170, max 196); Kalyān spans 2 stations with a 18-point spread (min 98, max 116).
Verdict
🏆 Kalyān has better air quality with an AQI of 40 compared to Bhagalpur's 105. That's a significant difference of 65 points.