Haldia vs Purnia
Side-by-side air quality comparison between Haldia and Purnia.
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 Purnia averaged 133 — a 43-point (48%) gap, with Purnia the more polluted and Haldia the cleaner of the two. On 529 days when both cities reported, Haldia was cleaner on 443 of them; the average daily gap was 78 AQI points.
Seasonality & days
Haldia peaks in December, while Purnia peaks in January. Haldia logged 0% Severe days and 65.4% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Haldia 51 days, Purnia 14 days.
Year-over-year progress
Haldia has worsened by 8 AQI points (9.8%) from 2023 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Haldia reached AQI 322 at Priyambada Housing Estate (WBPCB) on 2024-11-26; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Haldia spans 1 CPCB stations with a 0-point spread (min 86, max 86); Purnia spans 1 stations with a 0-point spread (min 176, max 176).