Katihar vs Saharsa
Side-by-side air quality comparison between Katihar and Saharsa.
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 | Katihar | Saharsa |
|---|---|---|
| PM2.5(µg/m³) | 105.90 | 99.90 |
| PM10(µg/m³) | 109.00 | 105.70 |
| NO₂(µg/m³) | 25.20 | 26.10 |
| SO₂(µg/m³) | 20.10 | 13.00 |
| O₃(µg/m³) | 67.00 | 62.00 |
| CO(µg/m³) | 727.00 | 670.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Katihar averaged an AQI of 123 while Saharsa averaged 139 — a 16-point (13%) gap, with Saharsa the more polluted and Katihar the cleaner of the two. On 795 days when both cities reported, Katihar was cleaner on 397 of them; the average daily gap was 44 AQI points.
Seasonality & days
Katihar peaks in December, while Saharsa peaks in January. Katihar logged 3.1% Severe days and 26.9% Good-or-Satisfactory days; Saharsa was 1.4% Severe and 28.4% Good-or-Satisfactory. Longest clean-air streaks: Katihar 19 days, Saharsa 20 days.
Year-over-year progress
Katihar has improved by 188 AQI points (60.5%) from 2021 to 2024; Saharsa has improved by 139 AQI points (50%) over the same window. The worst recorded day for Katihar reached AQI 465 at Mirchaibari (BSPCB) on 2023-01-23; Saharsa hit AQI 454 at Police Line (BSPCB) on 2022-12-13.
Station-level disparity
Katihar spans 1 CPCB stations with a 0-point spread (min 185, max 185); Saharsa spans 1 stations with a 0-point spread (min 188, max 188).
Verdict
🏆 Saharsa has better air quality with an AQI of 234 compared to Katihar's 253.