Delhi vs Haldia
Side-by-side air quality comparison between Delhi 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 | Delhi | Haldia |
|---|---|---|
| PM2.5(µg/m³) | 78.20 | 50.20 |
| PM10(µg/m³) | 154.10 | 55.20 |
| NO₂(µg/m³) | 47.90 | 14.30 |
| SO₂(µg/m³) | 33.40 | 9.50 |
| O₃(µg/m³) | 43.00 | 79.00 |
| CO(µg/m³) | 545.00 | 280.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Delhi averaged an AQI of 210 while Haldia averaged 90 — a 120-point (133%) gap, with Delhi the more polluted and Haldia the cleaner of the two. On 701 days when both cities reported, Haldia was cleaner on 696 of them; the average daily gap was 212 AQI points.
Seasonality & days
Delhi peaks in November, while Haldia peaks in December. Delhi logged 18.7% Severe days and 1.7% Good-or-Satisfactory days; Haldia was 0% Severe and 65.4% Good-or-Satisfactory. Longest clean-air streaks: Delhi 3 days, Haldia 51 days.
Year-over-year progress
Delhi has improved by 42 AQI points (16.7%) from 2016 to 2024; Haldia has worsened by 8 AQI points (9.8%) over the same window. The worst recorded day for Delhi reached AQI 500 at Ashok Vihar (DPCC) on 2024-11-18; Haldia hit AQI 322 at Priyambada Housing Estate (WBPCB) on 2024-11-26.
Station-level disparity
Delhi spans 39 CPCB stations with a 84-point spread (min 178, max 262); Haldia spans 1 stations with a 0-point spread (min 86, max 86).
Verdict
🏆 Haldia has better air quality with an AQI of 84 compared to Delhi's 161. That's a significant difference of 77 points.