Arrah vs Kochi
Side-by-side air quality comparison between Arrah and Kochi.
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 | Kochi |
|---|---|---|
| PM2.5(µg/m³) | 102.90 | 8.80 |
| PM10(µg/m³) | 117.10 | 11.60 |
| NO₂(µg/m³) | 42.70 | 8.90 |
| SO₂(µg/m³) | 15.30 | 2.70 |
| O₃(µg/m³) | 46.00 | 30.00 |
| CO(µg/m³) | 841.00 | 119.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Arrah averaged an AQI of 123 while Kochi averaged 91 — a 32-point (35%) gap, with Arrah the more polluted and Kochi the cleaner of the two. On 564 days when both cities reported, Kochi was cleaner on 465 of them; the average daily gap was 90 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Arrah logged 0.2% Severe days and 32.3% Good-or-Satisfactory days; Kochi was 0% Severe and 70.9% Good-or-Satisfactory. Longest clean-air streaks: Arrah 11 days, Kochi 80 days.
Year-over-year progress
Arrah has improved by 175 AQI points (58.7%) from 2021 to 2024; Kochi has worsened by 7 AQI points (8.3%) over the same window. The worst recorded day for Arrah reached AQI 420 at New DM Office (BSPCB) on 2021-12-21; Kochi hit AQI 293 at Vyttila Kochi (PCB) on 2022-12-08.
Station-level disparity
Arrah spans 1 CPCB stations with a 0-point spread (min 162, max 162); Kochi spans 1 stations with a 0-point spread (min 88, max 88).
Verdict
🏆 Kochi has better air quality with an AQI of 15 compared to Arrah's 244. That's a significant difference of 229 points.