Aizawl — AQI Trends
Year-over-year AQI trajectory for Aizawl (2020–2024). Based on CPCB station data, 2016–present.
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Aizawl — annual AQI 2020–2024
Year × month heatmap
Worst single days on record
- 2021-01-20Sikulpuikawn Aizawl (PCB)208
- 2021-01-21Sikulpuikawn Aizawl (PCB)193
- 2024-10-26Sikulpuikawn Aizawl (PCB)183
- 2024-10-22Sikulpuikawn Aizawl (PCB)180
- 2022-07-05Sikulpuikawn Aizawl (PCB)178
- 2020-12-07Sikulpuikawn Aizawl (PCB)163
- 2021-03-25Sikulpuikawn Aizawl (PCB)162
- 2021-02-25Sikulpuikawn Aizawl (PCB)162
- 2021-01-17Sikulpuikawn Aizawl (PCB)158
- 2021-03-20Sikulpuikawn Aizawl (PCB)154
What the numbers say
Overview
Aizawl's AQI moved from 30 in 2020 to 46 in 2024 — a rise of 53.3% over 4 years. The long-run trend is worsening, with a regression slope of 3.7 AQI points per year.
The data story
The worst recorded year in Aizawl was 2023 at AQI 49, while the best was 2020 at AQI 30. The city has posted 0.1% of all measured days above AQI 200 (the Poor threshold), and its worst recorded single day hit 208 on 20 Jan 2021.
Why this pattern
A worsening trend in Aizawl 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.