Dehradun vs Guwahati
Side-by-side air quality comparison between Dehradun and Guwahati.
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 | Guwahati |
|---|---|---|
| PM2.5(µg/m³) | 35.00 | 35.50 |
| PM10(µg/m³) | 112.00 | 41.80 |
| NO₂(µg/m³) | 0.90 | 1.20 |
| SO₂(µg/m³) | 8.30 | 4.90 |
| O₃(µg/m³) | 166.00 | 150.00 |
| CO(µg/m³) | 268.00 | 359.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dehradun averaged an AQI of 106 while Guwahati averaged 123 — a 17-point (16%) gap, with Guwahati the more polluted and Dehradun the cleaner of the two. On 796 days when both cities reported, Dehradun was cleaner on 575 of them; the average daily gap was 67 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; Guwahati was 0.1% Severe and 44.9% Good-or-Satisfactory. Longest clean-air streaks: Dehradun 41 days, Guwahati 105 days.
Year-over-year progress
Dehradun has worsened by 19 AQI points (21.8%) from 2022 to 2024; Guwahati has worsened by 14 AQI points (12.8%) over the same window. The worst recorded day for Dehradun reached AQI 327 at Doon University (UKPCB) on 2024-01-19; Guwahati hit AQI 420 at Railway Colony (PCBA) on 2023-01-15.
Station-level disparity
Dehradun spans 1 CPCB stations with a 0-point spread (min 98, max 98); Guwahati spans 4 stations with a 26-point spread (min 118, max 144).
Verdict
🏆 Guwahati has better air quality with an AQI of 60 compared to Dehradun's 109.