Dehradun vs Gangtok
Side-by-side air quality comparison between Dehradun and Gangtok.
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 | Gangtok |
|---|---|---|
| PM2.5(µg/m³) | 14.40 | 35.70 |
| PM10(µg/m³) | 14.60 | 45.20 |
| NO₂(µg/m³) | 25.40 | 8.70 |
| SO₂(µg/m³) | 4.10 | 2.60 |
| O₃(µg/m³) | 71.00 | 112.00 |
| CO(µg/m³) | 350.00 | 461.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dehradun averaged an AQI of 106 while Gangtok averaged 48 — a 58-point (121%) gap, with Dehradun the more polluted and Gangtok the cleaner of the two. On 630 days when both cities reported, Gangtok was cleaner on 564 of them; the average daily gap was 56 AQI points.
Seasonality & days
Dehradun peaks in January, while Gangtok peaks in March. Dehradun logged 0% Severe days and 62.8% Good-or-Satisfactory days; Gangtok was 0% Severe and 96.2% Good-or-Satisfactory. Longest clean-air streaks: Dehradun 41 days, Gangtok 94 days.
Year-over-year progress
Dehradun has worsened by 19 AQI points (21.8%) from 2022 to 2024; Gangtok has worsened by 14 AQI points (41.2%) over the same window. The worst recorded day for Dehradun reached AQI 327 at Doon University (UKPCB) on 2024-01-19; Gangtok hit AQI 264 at Zero Point GICI (SSPCB) on 2023-01-16.
Station-level disparity
Dehradun spans 1 CPCB stations with a 0-point spread (min 98, max 98); Gangtok spans 1 stations with a 0-point spread (min 50, max 50).
Verdict
🏆 Dehradun has better air quality with an AQI of 24 compared to Gangtok's 60.