Asansol vs Haldia
Side-by-side air quality comparison between Asansol and Haldia.
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 | Asansol | Haldia |
|---|---|---|
| PM2.5(µg/m³) | 91.00 | 46.60 |
| PM10(µg/m³) | 96.20 | 51.90 |
| NO₂(µg/m³) | 48.00 | 11.40 |
| SO₂(µg/m³) | 91.90 | 10.40 |
| O₃(µg/m³) | 58.00 | 96.00 |
| CO(µg/m³) | 838.00 | 284.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Asansol averaged an AQI of 145 while Haldia averaged 90 — a 55-point (61%) gap, with Asansol the more polluted and Haldia the cleaner of the two. On 359 days when both cities reported, Haldia was cleaner on 336 of them; the average daily gap was 84 AQI points.
Seasonality & days
Both cities see their worst air in December on average. Asansol logged 0% Severe days and 43.3% Good-or-Satisfactory days; Haldia was 0% Severe and 65.4% Good-or-Satisfactory. Longest clean-air streaks: Asansol 44 days, Haldia 51 days.
Year-over-year progress
Asansol has worsened by 12 AQI points (9%) from 2018 to 2024; Haldia has worsened by 8 AQI points (9.8%) over the same window. The worst recorded day for Asansol reached AQI 394 at Court Area (WBPCB) on 2022-12-13; Haldia hit AQI 322 at Priyambada Housing Estate (WBPCB) on 2024-11-26.
Station-level disparity
Asansol spans 4 CPCB stations with a 40-point spread (min 123, max 163); Haldia spans 1 stations with a 0-point spread (min 86, max 86).
Verdict
🏆 Haldia has better air quality with an AQI of 78 compared to Asansol's 204. That's a significant difference of 126 points.