Arrah vs Siliguri
Side-by-side air quality comparison between Arrah and Siliguri.
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, Arrah averaged an AQI of 123 while Siliguri averaged 81 — a 42-point (52%) gap, with Arrah the more polluted and Siliguri the cleaner of the two. On 502 days when both cities reported, Siliguri was cleaner on 402 of them; the average daily gap was 74 AQI points.
Seasonality & days
Arrah peaks in January, while Siliguri peaks in February. Arrah logged 0.2% Severe days and 32.3% Good-or-Satisfactory days; Siliguri was 0.1% Severe and 61.8% Good-or-Satisfactory. Longest clean-air streaks: Arrah 11 days, Siliguri 180 days.
Year-over-year progress
Arrah has improved by 175 AQI points (58.7%) from 2021 to 2024; Siliguri has improved by 39 AQI points (32.5%) over the same window. The worst recorded day for Arrah reached AQI 420 at New DM Office (BSPCB) on 2021-12-21; Siliguri hit AQI 415 at Ward-32 Bapupara (WBPCB) on 2018-02-08.
Station-level disparity
Arrah spans 1 CPCB stations with a 0-point spread (min 162, max 162); Siliguri spans 1 stations with a 0-point spread (min 107, max 107).