Haldia vs Ludhiana
Side-by-side air quality comparison between Haldia and Ludhiana.
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 | Ludhiana |
|---|---|---|
| PM2.5(µg/m³) | 46.60 | 71.50 |
| PM10(µg/m³) | 51.90 | 100.40 |
| NO₂(µg/m³) | 11.40 | 31.30 |
| SO₂(µg/m³) | 10.40 | 17.00 |
| O₃(µg/m³) | 96.00 | 62.00 |
| CO(µg/m³) | 284.00 | 748.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Haldia averaged an AQI of 90 while Ludhiana averaged 117 — a 27-point (30%) gap, with Ludhiana the more polluted and Haldia the cleaner of the two.
Seasonality & days
Haldia peaks in December, while Ludhiana peaks in November. Haldia logged 0% Severe days and 65.4% Good-or-Satisfactory days; Ludhiana was 0.3% Severe and 53.599999999999994% Good-or-Satisfactory. Longest clean-air streaks: Haldia 51 days, Ludhiana 53 days.
Year-over-year progress
Haldia has worsened by 8 AQI points (9.8%) from 2023 to 2024; Ludhiana has improved by 79 AQI points (40.3%) over the same window. The worst recorded day for Haldia reached AQI 322 at Priyambada Housing Estate (WBPCB) on 2024-11-26; Ludhiana hit AQI 488 at Punjab Agricultural University (PPCB) on 2018-06-14.
Station-level disparity
Haldia spans 1 CPCB stations with a 0-point spread (min 86, max 86); Ludhiana spans 1 stations with a 0-point spread (min 118, max 118).
Verdict
🏆 Haldia has better air quality with an AQI of 78 compared to Ludhiana's 139. That's a significant difference of 61 points.