Arrah vs Imphal
Side-by-side air quality comparison between Arrah and Imphal.
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 | Arrah | Imphal |
|---|---|---|
| PM2.5(µg/m³) | 102.90 | 36.40 |
| PM10(µg/m³) | 117.10 | 44.50 |
| NO₂(µg/m³) | 42.70 | 7.20 |
| SO₂(µg/m³) | 15.30 | 2.20 |
| O₃(µg/m³) | 46.00 | 60.00 |
| CO(µg/m³) | 841.00 | 323.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Arrah averaged an AQI of 123 while Imphal averaged 110 — a 13-point (12%) gap, with Arrah the more polluted and Imphal the cleaner of the two. On 403 days when both cities reported, Imphal was cleaner on 212 of them; the average daily gap was 68 AQI points.
Seasonality & days
Arrah peaks in January, while Imphal peaks in October. Arrah logged 0.2% Severe days and 32.3% Good-or-Satisfactory days; Imphal was 1.1% Severe and 49.400000000000006% Good-or-Satisfactory. Longest clean-air streaks: Arrah 11 days, Imphal 103 days.
Year-over-year progress
Arrah has improved by 175 AQI points (58.7%) from 2021 to 2024; Imphal has worsened by 23 AQI points (26.4%) over the same window. The worst recorded day for Arrah reached AQI 420 at New DM Office (BSPCB) on 2021-12-21; Imphal hit AQI 500 at University Imphal (PCB) on 2024-10-11.
Station-level disparity
Arrah spans 1 CPCB stations with a 0-point spread (min 162, max 162); Imphal spans 2 stations with a 4-point spread (min 97, max 101).
Verdict
🏆 Imphal has better air quality with an AQI of 61 compared to Arrah's 244. That's a significant difference of 183 points.