Haldia vs Siliguri
Side-by-side air quality comparison between Haldia and Siliguri.
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 | Haldia | Siliguri |
|---|---|---|
| PM2.5(µg/m³) | 49.00 | 82.20 |
| PM10(µg/m³) | 53.80 | 105.70 |
| NO₂(µg/m³) | 14.40 | 15.40 |
| SO₂(µg/m³) | 8.90 | 6.50 |
| O₃(µg/m³) | 77.00 | 95.00 |
| CO(µg/m³) | 273.00 | 539.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Haldia averaged an AQI of 90 while Siliguri averaged 81 — a 9-point (11%) gap, with Haldia the more polluted and Siliguri the cleaner of the two. Across 352 shared days the head-to-head is almost even, with an average daily gap of 39 AQI points.
Seasonality & days
Haldia peaks in December, while Siliguri peaks in February. Haldia logged 0% Severe days and 65.4% Good-or-Satisfactory days; Siliguri was 0.1% Severe and 61.8% Good-or-Satisfactory. Longest clean-air streaks: Haldia 51 days, Siliguri 180 days.
Year-over-year progress
Haldia has worsened by 8 AQI points (9.8%) from 2023 to 2024; Siliguri has improved by 39 AQI points (32.5%) over the same window. The worst recorded day for Haldia reached AQI 322 at Priyambada Housing Estate (WBPCB) on 2024-11-26; Siliguri hit AQI 415 at Ward-32 Bapupara (WBPCB) on 2018-02-08.
Station-level disparity
Haldia spans 1 CPCB stations with a 0-point spread (min 86, max 86); Siliguri spans 1 stations with a 0-point spread (min 107, max 107).
Verdict
🏆 Haldia has better air quality with an AQI of 82 compared to Siliguri's 174. That's a significant difference of 92 points.