Motihari vs Purnia
Side-by-side air quality comparison between Motihari and Purnia.
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 | Motihari | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 152.70 | 105.90 |
| PM10(µg/m³) | 170.90 | 109.00 |
| NO₂(µg/m³) | 59.80 | 25.20 |
| SO₂(µg/m³) | 22.90 | 20.10 |
| O₃(µg/m³) | 45.00 | 67.00 |
| CO(µg/m³) | 1174.00 | 707.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Motihari averaged an AQI of 116 while Purnia averaged 133 — a 17-point (15%) gap, with Purnia the more polluted and Motihari the cleaner of the two. On 746 days when both cities reported, Motihari was cleaner on 509 of them; the average daily gap was 51 AQI points.
Seasonality & days
Motihari peaks in November, while Purnia peaks in January. Motihari logged 1.2% Severe days and 39.1% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Motihari 26 days, Purnia 14 days.
Year-over-year progress
Motihari has improved by 106 AQI points (47.7%) from 2021 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Motihari reached AQI 448 at Gandak Colony (BSPCB) on 2022-11-17; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Motihari spans 1 CPCB stations with a 0-point spread (min 153, max 153); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Purnia has better air quality with an AQI of 253 compared to Motihari's 326. That's a significant difference of 73 points.