Dehradun vs Delhi
Side-by-side air quality comparison between Dehradun and Delhi.
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 | Delhi |
|---|---|---|
| PM2.5(µg/m³) | 18.70 | 80.80 |
| PM10(µg/m³) | 18.70 | 143.90 |
| NO₂(µg/m³) | 35.70 | 41.80 |
| SO₂(µg/m³) | 3.50 | 33.00 |
| O₃(µg/m³) | 34.00 | 63.00 |
| CO(µg/m³) | 379.00 | 568.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dehradun averaged an AQI of 106 while Delhi averaged 210 — a 104-point (98%) gap, with Delhi the more polluted and Dehradun the cleaner of the two. On 800 days when both cities reported, Dehradun was cleaner on 797 of them; the average daily gap was 193 AQI points.
Seasonality & days
Dehradun peaks in January, while Delhi peaks in November. Dehradun logged 0% Severe days and 62.8% Good-or-Satisfactory days; Delhi was 18.7% Severe and 1.7% Good-or-Satisfactory. Longest clean-air streaks: Dehradun 41 days, Delhi 3 days.
Year-over-year progress
Dehradun has worsened by 19 AQI points (21.8%) from 2022 to 2024; Delhi has improved by 42 AQI points (16.7%) over the same window. The worst recorded day for Dehradun reached AQI 327 at Doon University (UKPCB) on 2024-01-19; Delhi hit AQI 500 at Ashok Vihar (DPCC) on 2024-11-18.
Station-level disparity
Dehradun spans 1 CPCB stations with a 0-point spread (min 98, max 98); Delhi spans 39 stations with a 84-point spread (min 178, max 262).
Verdict
🏆 Dehradun has better air quality with an AQI of 31 compared to Delhi's 170. That's a significant difference of 139 points.