Dehradun vs Kozhikode
Side-by-side air quality comparison between Dehradun and Kozhikode.
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 | Dehradun | Kozhikode |
|---|---|---|
| PM2.5(µg/m³) | 20.80 | 4.60 |
| PM10(µg/m³) | 20.80 | 10.30 |
| NO₂(µg/m³) | 41.40 | 0.50 |
| SO₂(µg/m³) | 3.80 | 0.30 |
| O₃(µg/m³) | 25.00 | 64.00 |
| CO(µg/m³) | 395.00 | 217.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dehradun averaged an AQI of 106 while Kozhikode averaged 78 — a 28-point (36%) gap, with Dehradun the more polluted and Kozhikode the cleaner of the two. On 157 days when both cities reported, Kozhikode was cleaner on 84 of them; the average daily gap was 41 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Dehradun logged 0% Severe days and 62.8% Good-or-Satisfactory days; Kozhikode was 0.1% Severe and 99% Good-or-Satisfactory. Longest clean-air streaks: Dehradun 41 days, Kozhikode 83 days.
Year-over-year progress
Dehradun has worsened by 19 AQI points (21.8%) from 2022 to 2024; Kozhikode has worsened by 29 AQI points (59.2%) over the same window. The worst recorded day for Dehradun reached AQI 327 at Doon University (UKPCB) on 2024-01-19; Kozhikode hit AQI 417 at Palayam Kozhikode (PCB) on 2021-01-25.
Station-level disparity
Dehradun spans 1 CPCB stations with a 0-point spread (min 98, max 98); Kozhikode spans 1 stations with a 0-point spread (min 59, max 59).
Verdict
🏆 Kozhikode has better air quality with an AQI of 10 compared to Dehradun's 35.