Katihar vs Sagar
Side-by-side air quality comparison between Katihar and Sagar.
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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Katihar averaged an AQI of 123 while Sagar averaged 96 — a 27-point (28%) gap, with Katihar the more polluted and Sagar the cleaner of the two. On 587 days when both cities reported, Sagar was cleaner on 422 of them; the average daily gap was 101 AQI points.
Seasonality & days
Katihar peaks in December, while Sagar peaks in November. Katihar logged 3.1% Severe days and 26.9% Good-or-Satisfactory days; Sagar was 0% Severe and 69.9% Good-or-Satisfactory. Longest clean-air streaks: Katihar 19 days, Sagar 57 days.
Year-over-year progress
Katihar has improved by 188 AQI points (60.5%) from 2021 to 2024; Sagar has worsened by 24 AQI points (33.3%) over the same window. The worst recorded day for Katihar reached AQI 465 at Mirchaibari (BSPCB) on 2023-01-23; Sagar hit AQI 347 at Civil Lines (MPPCB) on 2024-12-25.
Station-level disparity
Katihar spans 1 CPCB stations with a 0-point spread (min 185, max 185); Sagar spans 2 stations with a 45-point spread (min 73, max 118).