Kochi — AQI Trends
Year-over-year AQI trajectory for Kochi (2020–2024). Based on CPCB station data, 2016–present.
Kerala · Live Kochi AQI →
Kochi — annual AQI 2020–2024
Year × month heatmap
Worst single days on record
- 2022-12-08Vyttila Kochi (PCB)293
- 2022-12-07Vyttila Kochi (PCB)287
- 2022-09-11Vyttila Kochi (PCB)285
- 2022-12-02Vyttila Kochi (PCB)284
- 2022-05-10Vyttila Kochi (PCB)276
- 2022-11-11Vyttila Kochi (PCB)267
- 2022-11-12Vyttila Kochi (PCB)246
- 2021-12-18Vyttila Kochi (PCB)236
- 2020-02-19Vyttila Kochi (PCB)235
- 2022-12-01Vyttila Kochi (PCB)228
What the numbers say
Overview
Kochi's AQI moved from 84 in 2020 to 91 in 2024 — a rise of 8.3% over 4 years. The long-run trend is worsening, with a regression slope of 4.6 AQI points per year.
The data story
The worst recorded year in Kochi was 2022 at AQI 107, while the best was 2021 at AQI 63. The city has posted 2.8% of all measured days above AQI 200 (the Poor threshold), and its worst recorded single day hit 293 on 8 Dec 2022.
Why this pattern
A worsening trend in Kochi typically reflects rapid urbanisation, vehicle fleet growth outpacing Bharat Stage VI emission benefits, expanding industrial activity, and in some cases new construction dust. The data points the finger at what policy needs to target next: year-round baseline emissions, not just the winter peak.
What to do with this
For planners and residents, the trend matters as much as today's number. A worsening city needs aggressive source control and personal protection investments like indoor purifiers. An improving city rewards continued policy pressure but still requires caution during peak months. Use the live AQI page for day-to-day decisions and this chart for multi-year context. Year-over-year change of more than 10% in either direction is typically real signal, not noise.