Chandigarh vs Dehradun
Side-by-side air quality comparison between Chandigarh and Dehradun.
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 | Chandigarh | Dehradun |
|---|---|---|
| PM2.5(µg/m³) | 38.80 | 34.00 |
| PM10(µg/m³) | 100.80 | 110.40 |
| NO₂(µg/m³) | 1.60 | 0.80 |
| SO₂(µg/m³) | 11.10 | 7.90 |
| O₃(µg/m³) | 191.00 | 168.00 |
| CO(µg/m³) | 377.00 | 263.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chandigarh averaged an AQI of 153 while Dehradun averaged 106 — a 47-point (44%) gap, with Chandigarh the more polluted and Dehradun the cleaner of the two. On 800 days when both cities reported, Dehradun was cleaner on 722 of them; the average daily gap was 72 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Chandigarh logged 0.3% Severe days and 39.9% Good-or-Satisfactory days; Dehradun was 0% Severe and 62.8% Good-or-Satisfactory. Longest clean-air streaks: Chandigarh 92 days, Dehradun 41 days.
Year-over-year progress
Chandigarh has worsened by 27 AQI points (21.4%) from 2019 to 2024; Dehradun has worsened by 19 AQI points (21.8%) over the same window. The worst recorded day for Chandigarh reached AQI 452 at Sector-53 (CPCC) on 2022-11-09; Dehradun hit AQI 327 at Doon University (UKPCB) on 2024-01-19.
Station-level disparity
Chandigarh spans 3 CPCB stations with a 43-point spread (min 107, max 150); Dehradun spans 1 stations with a 0-point spread (min 98, max 98).
Verdict
🏆 Chandigarh has better air quality with an AQI of 102 compared to Dehradun's 108.