Kochi vs Siliguri
Side-by-side air quality comparison between Kochi and Siliguri.
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 | Siliguri |
|---|---|---|
| PM2.5(µg/m³) | 7.80 | 82.20 |
| PM10(µg/m³) | 9.90 | 105.70 |
| NO₂(µg/m³) | 10.00 | 15.40 |
| SO₂(µg/m³) | 2.70 | 6.50 |
| O₃(µg/m³) | 24.00 | 95.00 |
| CO(µg/m³) | 125.00 | 539.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kochi averaged an AQI of 91 while Siliguri averaged 81 — a 10-point (12%) gap, with Kochi the more polluted and Siliguri the cleaner of the two. On 759 days when both cities reported, Kochi was cleaner on 394 of them; the average daily gap was 58 AQI points.
Seasonality & days
Kochi peaks in January, while Siliguri peaks in February. Kochi logged 0% Severe days and 70.9% Good-or-Satisfactory days; Siliguri was 0.1% Severe and 61.8% Good-or-Satisfactory. Longest clean-air streaks: Kochi 80 days, Siliguri 180 days.
Year-over-year progress
Kochi has worsened by 7 AQI points (8.3%) from 2020 to 2024; Siliguri has improved by 39 AQI points (32.5%) over the same window. The worst recorded day for Kochi reached AQI 293 at Vyttila Kochi (PCB) on 2022-12-08; Siliguri hit AQI 415 at Ward-32 Bapupara (WBPCB) on 2018-02-08.
Station-level disparity
Kochi spans 1 CPCB stations with a 0-point spread (min 88, max 88); Siliguri spans 1 stations with a 0-point spread (min 107, max 107).
Verdict
🏆 Kochi has better air quality with an AQI of 13 compared to Siliguri's 174. That's a significant difference of 161 points.