Bhagalpur vs Katihar
Side-by-side air quality comparison between Bhagalpur and Katihar.
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 | Katihar |
|---|---|---|
| PM2.5(µg/m³) | 60.80 | 105.90 |
| PM10(µg/m³) | 65.00 | 109.00 |
| NO₂(µg/m³) | 20.50 | 25.20 |
| SO₂(µg/m³) | 25.00 | 20.10 |
| O₃(µg/m³) | 81.00 | 67.00 |
| CO(µg/m³) | 653.00 | 727.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bhagalpur averaged an AQI of 164 while Katihar averaged 123 — a 41-point (33%) gap, with Bhagalpur the more polluted and Katihar the cleaner of the two. On 954 days when both cities reported, Katihar was cleaner on 522 of them; the average daily gap was 51 AQI points.
Seasonality & days
Bhagalpur peaks in January, while Katihar peaks in December. Bhagalpur logged 1.9% Severe days and 19.9% Good-or-Satisfactory days; Katihar was 3.1% Severe and 26.9% Good-or-Satisfactory. Longest clean-air streaks: Bhagalpur 20 days, Katihar 19 days.
Year-over-year progress
Bhagalpur has improved by 123 AQI points (42.9%) from 2021 to 2024; Katihar has improved by 188 AQI points (60.5%) over the same window. The worst recorded day for Bhagalpur reached AQI 451 at Mayaganj (BSPCB) on 2022-12-30; Katihar hit AQI 465 at Mirchaibari (BSPCB) on 2023-01-23.
Station-level disparity
Bhagalpur spans 2 CPCB stations with a 26-point spread (min 170, max 196); Katihar spans 1 stations with a 0-point spread (min 185, max 185).
Verdict
🏆 Bhagalpur has better air quality with an AQI of 104 compared to Katihar's 253. That's a significant difference of 149 points.