Haldia vs Saharsa
Side-by-side air quality comparison between Haldia and Saharsa.
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
Pollutant-level comparison (PM2.5, PM10, O3, NO2, SO2, CO)▾
| Pollutant | Haldia | Saharsa |
|---|---|---|
| PM2.5(µg/m³) | 46.60 | 99.90 |
| PM10(µg/m³) | 51.90 | 105.70 |
| NO₂(µg/m³) | 11.40 | 26.10 |
| SO₂(µg/m³) | 10.40 | 13.00 |
| O₃(µg/m³) | 96.00 | 62.00 |
| CO(µg/m³) | 284.00 | 670.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Haldia averaged an AQI of 90 while Saharsa averaged 139 — a 49-point (54%) gap, with Saharsa the more polluted and Haldia the cleaner of the two. On 603 days when both cities reported, Haldia was cleaner on 528 of them; the average daily gap was 89 AQI points.
Seasonality & days
Haldia peaks in December, while Saharsa peaks in January. Haldia logged 0% Severe days and 65.4% Good-or-Satisfactory days; Saharsa was 1.4% Severe and 28.4% Good-or-Satisfactory. Longest clean-air streaks: Haldia 51 days, Saharsa 20 days.
Year-over-year progress
Haldia has worsened by 8 AQI points (9.8%) from 2023 to 2024; Saharsa has improved by 139 AQI points (50%) over the same window. The worst recorded day for Haldia reached AQI 322 at Priyambada Housing Estate (WBPCB) on 2024-11-26; Saharsa hit AQI 454 at Police Line (BSPCB) on 2022-12-13.
Station-level disparity
Haldia spans 1 CPCB stations with a 0-point spread (min 86, max 86); Saharsa spans 1 stations with a 0-point spread (min 188, max 188).
Verdict
🏆 Haldia has better air quality with an AQI of 78 compared to Saharsa's 234. That's a significant difference of 156 points.