Imphal vs Samastipur
Side-by-side air quality comparison between Imphal and Samastipur.
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 | Imphal | Samastipur |
|---|---|---|
| PM2.5(µg/m³) | 45.80 | 118.00 |
| PM10(µg/m³) | 53.10 | 134.60 |
| NO₂(µg/m³) | 12.00 | 61.60 |
| SO₂(µg/m³) | 2.30 | 18.30 |
| O₃(µg/m³) | 33.00 | 5.00 |
| CO(µg/m³) | 414.00 | 837.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Imphal averaged an AQI of 110 while Samastipur averaged 134 — a 24-point (22%) gap, with Samastipur the more polluted and Imphal the cleaner of the two. On 405 days when both cities reported, Imphal was cleaner on 291 of them; the average daily gap was 76 AQI points.
Seasonality & days
Imphal peaks in October, while Samastipur peaks in January. Imphal logged 1.1% Severe days and 49.400000000000006% Good-or-Satisfactory days; Samastipur was 1.4% Severe and 23.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Imphal 103 days, Samastipur 9 days.
Year-over-year progress
Imphal has worsened by 23 AQI points (26.4%) from 2022 to 2024; Samastipur has improved by 84 AQI points (38.5%) over the same window. The worst recorded day for Imphal reached AQI 500 at University Imphal (PCB) on 2024-10-11; Samastipur hit AQI 459 at DM Office Kasipur (BSPCB) on 2023-01-01.
Station-level disparity
Imphal spans 2 CPCB stations with a 4-point spread (min 97, max 101); Samastipur spans 1 stations with a 0-point spread (min 177, max 177).
Verdict
🏆 Imphal has better air quality with an AQI of 77 compared to Samastipur's 293. That's a significant difference of 216 points.