Kochi vs Tonk
Side-by-side air quality comparison between Kochi and Tonk.
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 | Tonk |
|---|---|---|
| PM2.5(µg/m³) | 8.80 | 27.80 |
| PM10(µg/m³) | 11.60 | 53.10 |
| NO₂(µg/m³) | 8.90 | 9.00 |
| SO₂(µg/m³) | 2.70 | 4.10 |
| O₃(µg/m³) | 30.00 | 47.00 |
| CO(µg/m³) | 119.00 | 206.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kochi averaged an AQI of 91 while Tonk averaged 142 — a 51-point (56%) gap, with Tonk the more polluted and Kochi the cleaner of the two. On 282 days when both cities reported, Kochi was cleaner on 241 of them; the average daily gap was 74 AQI points.
Seasonality & days
Kochi peaks in January, while Tonk peaks in November. Kochi logged 0% Severe days and 70.9% Good-or-Satisfactory days; Tonk was 0% Severe and 28.200000000000003% Good-or-Satisfactory. Longest clean-air streaks: Kochi 80 days, Tonk 11 days.
Year-over-year progress
Kochi has worsened by 7 AQI points (8.3%) from 2020 to 2024; Tonk has improved by 14 AQI points (9%) over the same window. The worst recorded day for Kochi reached AQI 293 at Vyttila Kochi (PCB) on 2022-12-08; Tonk hit AQI 368 at Shastri Nagar (RSPCB) on 2023-11-17.
Station-level disparity
Kochi spans 1 CPCB stations with a 0-point spread (min 88, max 88); Tonk spans 1 stations with a 0-point spread (min 148, max 148).
Verdict
🏆 Kochi has better air quality with an AQI of 15 compared to Tonk's 54.