Asansol vs Siwan
Side-by-side air quality comparison between Asansol and Siwan.
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, Asansol averaged an AQI of 145 while Siwan averaged 148 — a 3-point (2%) gap, with Siwan the more polluted and Asansol the cleaner of the two. On 462 days when both cities reported, Asansol was cleaner on 274 of them; the average daily gap was 86 AQI points.
Seasonality & days
Asansol peaks in December, while Siwan peaks in January. Asansol logged 0% Severe days and 43.3% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Asansol 44 days, Siwan 13 days.
Year-over-year progress
Asansol has worsened by 12 AQI points (9%) from 2018 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Asansol reached AQI 394 at Court Area (WBPCB) on 2022-12-13; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Asansol spans 4 CPCB stations with a 40-point spread (min 123, max 163); Siwan spans 1 stations with a 0-point spread (min 197, max 197).