Dehradun — AQI Trends
Year-over-year AQI trajectory for Dehradun (2022–2024). Based on CPCB station data, 2016–present.
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Dehradun — annual AQI 2022–2024
Year × month heatmap
Worst single days on record
- 2024-01-19Doon University (UKPCB)327
- 2024-01-31Doon University (UKPCB)314
- 2024-01-22Doon University (UKPCB)310
- 2024-12-17Doon University (UKPCB)298
- 2024-01-27Doon University (UKPCB)298
- 2024-06-12Doon University (UKPCB)297
- 2024-01-28Doon University (UKPCB)296
- 2022-12-29Doon University (UKPCB)296
- 2024-11-13Doon University (UKPCB)291
- 2024-11-10Doon University (UKPCB)291
What the numbers say
Overview
Dehradun's AQI moved from 87 in 2022 to 106 in 2024 — a rise of 21.8% over 2 years. The long-run trend is worsening, with a regression slope of 9.5 AQI points per year.
The data story
The worst recorded year in Dehradun was 2024 at AQI 106, while the best was 2022 at AQI 87. The city has posted 6.7% of all measured days above AQI 200 (the Poor threshold), and its worst recorded single day hit 327 on 19 Jan 2024.
Why this pattern
A worsening trend in Dehradun 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.