Haldia vs Sasaram
Side-by-side air quality comparison between Haldia and Sasaram.
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 | Sasaram |
|---|---|---|
| PM2.5(µg/m³) | 34.10 | 34.20 |
| PM10(µg/m³) | 42.10 | 57.70 |
| NO₂(µg/m³) | 1.40 | 0.70 |
| SO₂(µg/m³) | 8.40 | 5.80 |
| O₃(µg/m³) | 155.00 | 145.00 |
| CO(µg/m³) | 283.00 | 207.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Haldia averaged an AQI of 90 while Sasaram averaged 109 — a 19-point (21%) gap, with Sasaram the more polluted and Haldia the cleaner of the two. On 565 days when both cities reported, Haldia was cleaner on 361 of them; the average daily gap was 53 AQI points.
Seasonality & days
Haldia peaks in December, while Sasaram peaks in January. Haldia logged 0% Severe days and 65.4% Good-or-Satisfactory days; Sasaram was 0.1% Severe and 37% Good-or-Satisfactory. Longest clean-air streaks: Haldia 51 days, Sasaram 27 days.
Year-over-year progress
Haldia has worsened by 8 AQI points (9.8%) from 2023 to 2024; Sasaram has improved by 166 AQI points (60.4%) over the same window. The worst recorded day for Haldia reached AQI 322 at Priyambada Housing Estate (WBPCB) on 2024-11-26; Sasaram hit AQI 401 at Dada Peer (BSPCB) on 2021-11-28.
Station-level disparity
Haldia spans 1 CPCB stations with a 0-point spread (min 86, max 86); Sasaram spans 1 stations with a 0-point spread (min 148, max 148).
Verdict
🏆 Haldia has better air quality with an AQI of 58 compared to Sasaram's 59.