Motihari vs Shillong
Side-by-side air quality comparison between Motihari and Shillong.
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 | Shillong |
|---|---|---|
| PM2.5(µg/m³) | 156.00 | 20.40 |
| PM10(µg/m³) | 175.10 | 23.70 |
| NO₂(µg/m³) | 76.90 | 4.20 |
| SO₂(µg/m³) | 22.40 | 5.70 |
| O₃(µg/m³) | 0.00 | 99.00 |
| CO(µg/m³) | 1456.00 | 305.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Motihari averaged an AQI of 116 while Shillong averaged 75 — a 41-point (55%) gap, with Motihari the more polluted and Shillong the cleaner of the two. On 475 days when both cities reported, Shillong was cleaner on 441 of them; the average daily gap was 114 AQI points.
Seasonality & days
Motihari peaks in November, while Shillong peaks in February. Motihari logged 1.2% Severe days and 39.1% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Motihari 26 days, Shillong 113 days.
Year-over-year progress
Motihari has improved by 106 AQI points (47.7%) from 2021 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Motihari reached AQI 448 at Gandak Colony (BSPCB) on 2022-11-17; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Motihari spans 1 CPCB stations with a 0-point spread (min 153, max 153); Shillong spans 2 stations with a 2-point spread (min 42, max 44).
Verdict
🏆 Shillong has better air quality with an AQI of 34 compared to Motihari's 328. That's a significant difference of 294 points.