Hajipur vs Howrah
Side-by-side air quality comparison between Hajipur 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 | Hajipur | Howrah |
|---|---|---|
| PM2.5(µg/m³) | 99.00 | 68.70 |
| PM10(µg/m³) | 111.80 | 72.60 |
| NO₂(µg/m³) | 49.30 | 22.20 |
| SO₂(µg/m³) | 18.10 | 11.50 |
| O₃(µg/m³) | 19.00 | 55.00 |
| CO(µg/m³) | 784.00 | 360.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hajipur averaged an AQI of 173 while Howrah averaged 126 — a 47-point (37%) gap, with Hajipur the more polluted and Howrah the cleaner of the two. On 1255 days when both cities reported, Howrah was cleaner on 677 of them; the average daily gap was 61 AQI points.
Seasonality & days
Both cities see their worst air in December on average. Hajipur logged 0.3% Severe days and 36.6% Good-or-Satisfactory days; Howrah was 0.7% Severe and 48.7% Good-or-Satisfactory. Longest clean-air streaks: Hajipur 36 days, Howrah 120 days.
Year-over-year progress
Hajipur has worsened by 74 AQI points (74.7%) from 2020 to 2024; Howrah has improved by 32 AQI points (20.3%) over the same window. The worst recorded day for Hajipur reached AQI 427 at Industrial Area (BSPCB) on 2024-11-12; Howrah hit AQI 500 at Ghusuri (WBPCB) on 2017-04-15.
Station-level disparity
Hajipur spans 1 CPCB stations with a 0-point spread (min 149, max 149); Howrah spans 5 stations with a 116-point spread (min 111, max 227).
Verdict
🏆 Howrah has better air quality with an AQI of 130 compared to Hajipur's 231. That's a significant difference of 101 points.