Howrah vs Motihari
Side-by-side air quality comparison between Howrah and Motihari.
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 | Howrah | Motihari |
|---|---|---|
| PM2.5(µg/m³) | 71.70 | 152.70 |
| PM10(µg/m³) | 75.70 | 170.90 |
| NO₂(µg/m³) | 22.30 | 59.80 |
| SO₂(µg/m³) | 12.00 | 22.90 |
| O₃(µg/m³) | 60.00 | 45.00 |
| CO(µg/m³) | 390.00 | 1174.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Howrah averaged an AQI of 126 while Motihari averaged 116 — a 10-point (9%) gap, with Howrah the more polluted and Motihari the cleaner of the two. On 662 days when both cities reported, Motihari was cleaner on 368 of them; the average daily gap was 64 AQI points.
Seasonality & days
Howrah peaks in December, while Motihari peaks in November. Howrah logged 0.7% Severe days and 48.7% Good-or-Satisfactory days; Motihari was 1.2% Severe and 39.1% Good-or-Satisfactory. Longest clean-air streaks: Howrah 120 days, Motihari 26 days.
Year-over-year progress
Howrah has improved by 32 AQI points (20.3%) from 2016 to 2024; Motihari has improved by 106 AQI points (47.7%) over the same window. The worst recorded day for Howrah reached AQI 500 at Ghusuri (WBPCB) on 2017-04-15; Motihari hit AQI 448 at Gandak Colony (BSPCB) on 2022-11-17.
Station-level disparity
Howrah spans 5 CPCB stations with a 116-point spread (min 111, max 227); Motihari spans 1 stations with a 0-point spread (min 153, max 153).
Verdict
🏆 Howrah has better air quality with an AQI of 140 compared to Motihari's 326. That's a significant difference of 186 points.