Gangtok vs Haldia
Side-by-side air quality comparison between Gangtok 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 | Gangtok | Haldia |
|---|---|---|
| PM2.5(µg/m³) | 35.70 | 46.60 |
| PM10(µg/m³) | 45.20 | 51.90 |
| NO₂(µg/m³) | 8.70 | 11.40 |
| SO₂(µg/m³) | 2.60 | 10.40 |
| O₃(µg/m³) | 112.00 | 96.00 |
| CO(µg/m³) | 461.00 | 284.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gangtok averaged an AQI of 48 while Haldia averaged 90 — a 42-point (88%) gap, with Haldia the more polluted and Gangtok the cleaner of the two. On 582 days when both cities reported, Gangtok was cleaner on 386 of them; the average daily gap was 41 AQI points.
Seasonality & days
Gangtok peaks in March, while Haldia peaks in December. Gangtok logged 0% Severe days and 96.2% Good-or-Satisfactory days; Haldia was 0% Severe and 65.4% Good-or-Satisfactory. Longest clean-air streaks: Gangtok 94 days, Haldia 51 days.
Year-over-year progress
Gangtok has worsened by 14 AQI points (41.2%) from 2022 to 2024; Haldia has worsened by 8 AQI points (9.8%) over the same window. The worst recorded day for Gangtok reached AQI 264 at Zero Point GICI (SSPCB) on 2023-01-16; Haldia hit AQI 322 at Priyambada Housing Estate (WBPCB) on 2024-11-26.
Station-level disparity
Gangtok spans 1 CPCB stations with a 0-point spread (min 50, max 50); Haldia spans 1 stations with a 0-point spread (min 86, max 86).
Verdict
🏆 Gangtok has better air quality with an AQI of 60 compared to Haldia's 78.