Kochi vs Siwan
Side-by-side air quality comparison between Kochi and Siwan.
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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kochi averaged an AQI of 91 while Siwan averaged 148 — a 57-point (63%) gap, with Siwan the more polluted and Kochi the cleaner of the two. On 526 days when both cities reported, Kochi was cleaner on 447 of them; the average daily gap was 118 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Kochi logged 0% Severe days and 70.9% Good-or-Satisfactory days; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Kochi 80 days, Siwan 13 days.
Year-over-year progress
Kochi has worsened by 7 AQI points (8.3%) from 2020 to 2024; Siwan has improved by 184 AQI points (55.4%) over the same window. The worst recorded day for Kochi reached AQI 293 at Vyttila Kochi (PCB) on 2022-12-08; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Kochi spans 1 CPCB stations with a 0-point spread (min 88, max 88); Siwan spans 1 stations with a 0-point spread (min 197, max 197).