Dehradun vs Shillong
Side-by-side air quality comparison between Dehradun and Shillong.
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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dehradun averaged an AQI of 106 while Shillong averaged 75 — a 31-point (41%) gap, with Dehradun the more polluted and Shillong the cleaner of the two. On 336 days when both cities reported, Shillong was cleaner on 239 of them; the average daily gap was 53 AQI points.
Seasonality & days
Dehradun peaks in January, while Shillong peaks in February. Dehradun logged 0% Severe days and 62.8% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Dehradun 41 days, Shillong 113 days.
Year-over-year progress
Dehradun has worsened by 19 AQI points (21.8%) from 2022 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Dehradun reached AQI 327 at Doon University (UKPCB) on 2024-01-19; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Dehradun spans 1 CPCB stations with a 0-point spread (min 98, max 98); Shillong spans 2 stations with a 2-point spread (min 42, max 44).