Gangtok vs Katihar
Side-by-side air quality comparison between Gangtok 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, Gangtok averaged an AQI of 48 while Katihar averaged 123 — a 75-point (156%) gap, with Katihar the more polluted and Gangtok the cleaner of the two. On 678 days when both cities reported, Gangtok was cleaner on 661 of them; the average daily gap was 127 AQI points.
Seasonality & days
Gangtok peaks in March, while Katihar peaks in December. Gangtok logged 0% Severe days and 96.2% Good-or-Satisfactory days; Katihar was 3.1% Severe and 26.9% Good-or-Satisfactory. Longest clean-air streaks: Gangtok 94 days, Katihar 19 days.
Year-over-year progress
Gangtok has worsened by 14 AQI points (41.2%) from 2022 to 2024; Katihar has improved by 188 AQI points (60.5%) over the same window. The worst recorded day for Gangtok reached AQI 264 at Zero Point GICI (SSPCB) on 2023-01-16; Katihar hit AQI 465 at Mirchaibari (BSPCB) on 2023-01-23.
Station-level disparity
Gangtok spans 1 CPCB stations with a 0-point spread (min 50, max 50); Katihar spans 1 stations with a 0-point spread (min 185, max 185).