Bulandshahr vs Haldia
Side-by-side air quality comparison between Bulandshahr 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 | Bulandshahr | Haldia |
|---|---|---|
| PM2.5(µg/m³) | 55.30 | 34.10 |
| PM10(µg/m³) | 198.80 | 42.50 |
| NO₂(µg/m³) | 1.20 | 1.40 |
| SO₂(µg/m³) | 10.10 | 7.90 |
| O₃(µg/m³) | 193.00 | 147.00 |
| CO(µg/m³) | 329.00 | 273.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bulandshahr averaged an AQI of 142 while Haldia averaged 90 — a 52-point (58%) gap, with Bulandshahr the more polluted and Haldia the cleaner of the two. On 693 days when both cities reported, Haldia was cleaner on 585 of them; the average daily gap was 67 AQI points.
Seasonality & days
Bulandshahr peaks in November, while Haldia peaks in December. Bulandshahr logged 3.2% Severe days and 27.099999999999998% Good-or-Satisfactory days; Haldia was 0% Severe and 65.4% Good-or-Satisfactory. Longest clean-air streaks: Bulandshahr 41 days, Haldia 51 days.
Year-over-year progress
Bulandshahr has improved by 82 AQI points (36.6%) from 2018 to 2024; Haldia has worsened by 8 AQI points (9.8%) over the same window. The worst recorded day for Bulandshahr reached AQI 500 at Yamunapuram (UPPCB) on 2018-06-13; Haldia hit AQI 322 at Priyambada Housing Estate (WBPCB) on 2024-11-26.
Station-level disparity
Bulandshahr spans 1 CPCB stations with a 0-point spread (min 180, max 180); Haldia spans 1 stations with a 0-point spread (min 86, max 86).
Verdict
🏆 Haldia has better air quality with an AQI of 58 compared to Bulandshahr's 166. That's a significant difference of 108 points.