Kochi vs Shillong
Side-by-side air quality comparison between Kochi 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 | Kochi | Shillong |
|---|---|---|
| PM2.5(µg/m³) | 8.80 | 17.90 |
| PM10(µg/m³) | 11.60 | 21.40 |
| NO₂(µg/m³) | 8.90 | 3.10 |
| SO₂(µg/m³) | 2.70 | 6.20 |
| O₃(µg/m³) | 30.00 | 118.00 |
| CO(µg/m³) | 119.00 | 304.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kochi averaged an AQI of 91 while Shillong averaged 75 — a 16-point (21%) gap, with Kochi the more polluted and Shillong the cleaner of the two. On 655 days when both cities reported, Shillong was cleaner on 568 of them; the average daily gap was 57 AQI points.
Seasonality & days
Kochi peaks in January, while Shillong peaks in February. Kochi logged 0% Severe days and 70.9% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Kochi 80 days, Shillong 113 days.
Year-over-year progress
Kochi has worsened by 7 AQI points (8.3%) from 2020 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Kochi reached AQI 293 at Vyttila Kochi (PCB) on 2022-12-08; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Kochi spans 1 CPCB stations with a 0-point spread (min 88, max 88); Shillong spans 2 stations with a 2-point spread (min 42, max 44).
Verdict
🏆 Kochi has better air quality with an AQI of 15 compared to Shillong's 30.