Bulandshahr vs Howrah
Side-by-side air quality comparison between Bulandshahr and Howrah.
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 | Howrah |
|---|---|---|
| PM2.5(µg/m³) | 71.70 | 64.70 |
| PM10(µg/m³) | 108.50 | 69.40 |
| NO₂(µg/m³) | 30.30 | 18.10 |
| SO₂(µg/m³) | 10.30 | 13.10 |
| O₃(µg/m³) | 60.00 | 86.00 |
| CO(µg/m³) | 488.00 | 421.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bulandshahr averaged an AQI of 142 while Howrah averaged 126 — a 16-point (13%) gap, with Bulandshahr the more polluted and Howrah the cleaner of the two. On 1918 days when both cities reported, Howrah was cleaner on 1249 of them; the average daily gap was 76 AQI points.
Seasonality & days
Bulandshahr peaks in November, while Howrah peaks in December. Bulandshahr logged 3.2% Severe days and 27.099999999999998% Good-or-Satisfactory days; Howrah was 0.7% Severe and 48.7% Good-or-Satisfactory. Longest clean-air streaks: Bulandshahr 41 days, Howrah 120 days.
Year-over-year progress
Bulandshahr has improved by 82 AQI points (36.6%) from 2018 to 2024; Howrah has improved by 32 AQI points (20.3%) over the same window. The worst recorded day for Bulandshahr reached AQI 500 at Yamunapuram (UPPCB) on 2018-06-13; Howrah hit AQI 500 at Ghusuri (WBPCB) on 2017-04-15.
Station-level disparity
Bulandshahr spans 1 CPCB stations with a 0-point spread (min 180, max 180); Howrah spans 5 stations with a 116-point spread (min 111, max 227).
Verdict
🏆 Howrah has better air quality with an AQI of 117 compared to Bulandshahr's 140.