Guwahati vs Haldia
Side-by-side air quality comparison between Guwahati 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 | Guwahati | Haldia |
|---|---|---|
| PM2.5(µg/m³) | 31.90 | 46.60 |
| PM10(µg/m³) | 36.00 | 51.90 |
| NO₂(µg/m³) | 5.40 | 11.40 |
| SO₂(µg/m³) | 4.20 | 10.40 |
| O₃(µg/m³) | 97.00 | 96.00 |
| CO(µg/m³) | 393.00 | 284.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Guwahati averaged an AQI of 123 while Haldia averaged 90 — a 33-point (37%) gap, with Guwahati the more polluted and Haldia the cleaner of the two. On 698 days when both cities reported, Haldia was cleaner on 617 of them; the average daily gap was 80 AQI points.
Seasonality & days
Guwahati peaks in January, while Haldia peaks in December. Guwahati logged 0.1% Severe days and 44.9% Good-or-Satisfactory days; Haldia was 0% Severe and 65.4% Good-or-Satisfactory. Longest clean-air streaks: Guwahati 105 days, Haldia 51 days.
Year-over-year progress
Guwahati has worsened by 14 AQI points (12.8%) from 2019 to 2024; Haldia has worsened by 8 AQI points (9.8%) over the same window. The worst recorded day for Guwahati reached AQI 420 at Railway Colony (PCBA) on 2023-01-15; Haldia hit AQI 322 at Priyambada Housing Estate (WBPCB) on 2024-11-26.
Station-level disparity
Guwahati spans 4 CPCB stations with a 26-point spread (min 118, max 144); Haldia spans 1 stations with a 0-point spread (min 86, max 86).
Verdict
🏆 Guwahati has better air quality with an AQI of 54 compared to Haldia's 78.