Charkhi Dādri vs Haldia
Side-by-side air quality comparison between Charkhi Dādri 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 | Charkhi Dādri | Haldia |
|---|---|---|
| PM2.5(µg/m³) | 67.80 | 46.60 |
| PM10(µg/m³) | 219.30 | 51.90 |
| NO₂(µg/m³) | 11.50 | 11.40 |
| SO₂(µg/m³) | 9.90 | 10.40 |
| O₃(µg/m³) | 99.00 | 96.00 |
| CO(µg/m³) | 416.00 | 284.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Charkhi Dādri averaged an AQI of 145 while Haldia averaged 90 — a 55-point (61%) gap, with Charkhi Dādri the more polluted and Haldia the cleaner of the two. On 679 days when both cities reported, Haldia was cleaner on 565 of them; the average daily gap was 77 AQI points.
Seasonality & days
Charkhi Dādri peaks in November, while Haldia peaks in December. Charkhi Dādri logged 0.7% Severe days and 28% Good-or-Satisfactory days; Haldia was 0% Severe and 65.4% Good-or-Satisfactory. Longest clean-air streaks: Charkhi Dādri 48 days, Haldia 51 days.
Year-over-year progress
Charkhi Dādri has improved by 51 AQI points (26%) from 2020 to 2024; Haldia has worsened by 8 AQI points (9.8%) over the same window. The worst recorded day for Charkhi Dādri reached AQI 470 at Mini Secretariat Charkhi (HSPCB) on 2021-11-12; Haldia hit AQI 322 at Priyambada Housing Estate (WBPCB) on 2024-11-26.
Station-level disparity
Charkhi Dādri spans 1 CPCB stations with a 0-point spread (min 162, max 162); 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 Charkhi Dādri's 180. That's a significant difference of 102 points.