Haldia vs Siwan
Side-by-side air quality comparison between Haldia 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, Haldia averaged an AQI of 90 while Siwan averaged 148 — a 58-point (64%) gap, with Siwan the more polluted and Haldia the cleaner of the two. On 513 days when both cities reported, Haldia was cleaner on 438 of them; the average daily gap was 94 AQI points.
Seasonality & days
Haldia peaks in December, while Siwan peaks in January. Haldia logged 0% Severe days and 65.4% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Haldia 51 days, Siwan 13 days.
Year-over-year progress
Haldia has worsened by 8 AQI points (9.8%) from 2023 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Haldia reached AQI 322 at Priyambada Housing Estate (WBPCB) on 2024-11-26; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Haldia spans 1 CPCB stations with a 0-point spread (min 86, max 86); Siwan spans 1 stations with a 0-point spread (min 197, max 197).