Chapra vs Gangtok
Side-by-side air quality comparison between Chapra and Gangtok.
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, Chapra averaged an AQI of 149 while Gangtok averaged 48 — a 101-point (210%) gap, with Chapra the more polluted and Gangtok the cleaner of the two. On 680 days when both cities reported, Gangtok was cleaner on 668 of them; the average daily gap was 139 AQI points.
Seasonality & days
Chapra peaks in January, while Gangtok peaks in March. Chapra logged 2.4% Severe days and 26.8% Good-or-Satisfactory days; Gangtok was 0% Severe and 96.2% Good-or-Satisfactory. Longest clean-air streaks: Chapra 14 days, Gangtok 94 days.
Year-over-year progress
Chapra has improved by 181 AQI points (54.8%) from 2021 to 2024; Gangtok has worsened by 14 AQI points (41.2%) over the same window. The worst recorded day for Chapra reached AQI 452 at Darshan Nagar (BSPCB) on 2022-12-20; Gangtok hit AQI 264 at Zero Point GICI (SSPCB) on 2023-01-16.
Station-level disparity
Chapra spans 1 CPCB stations with a 0-point spread (min 195, max 195); Gangtok spans 1 stations with a 0-point spread (min 50, max 50).