Howrah vs Katihar
Side-by-side air quality comparison between Howrah 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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Howrah averaged an AQI of 126 while Katihar averaged 123 — a 3-point (2%) gap, with Howrah the more polluted and Katihar the cleaner of the two. On 638 days when both cities reported, Howrah was cleaner on 335 of them; the average daily gap was 62 AQI points.
Seasonality & days
Both cities see their worst air in December on average. Howrah logged 0.7% Severe days and 48.7% Good-or-Satisfactory days; Katihar was 3.1% Severe and 26.9% Good-or-Satisfactory. Longest clean-air streaks: Howrah 120 days, Katihar 19 days.
Year-over-year progress
Howrah has improved by 32 AQI points (20.3%) from 2016 to 2024; Katihar has improved by 188 AQI points (60.5%) over the same window. The worst recorded day for Howrah reached AQI 500 at Ghusuri (WBPCB) on 2017-04-15; Katihar hit AQI 465 at Mirchaibari (BSPCB) on 2023-01-23.
Station-level disparity
Howrah spans 5 CPCB stations with a 116-point spread (min 111, max 227); Katihar spans 1 stations with a 0-point spread (min 185, max 185).