Dehradun vs Prayagraj
Side-by-side air quality comparison between Dehradun and Prayagraj.
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 | Prayagraj |
|---|---|---|
| PM2.5(µg/m³) | 20.80 | 76.80 |
| PM10(µg/m³) | 20.80 | 93.80 |
| NO₂(µg/m³) | 41.40 | 59.00 |
| SO₂(µg/m³) | 3.80 | 16.00 |
| O₃(µg/m³) | 25.00 | 8.00 |
| CO(µg/m³) | 395.00 | 252.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dehradun averaged an AQI of 106 while Prayagraj averaged 80 — a 26-point (33%) gap, with Dehradun the more polluted and Prayagraj the cleaner of the two. On 500 days when both cities reported, Dehradun was cleaner on 299 of them; the average daily gap was 44 AQI points.
Seasonality & days
Dehradun peaks in January, while Prayagraj peaks in November. Dehradun logged 0% Severe days and 62.8% Good-or-Satisfactory days; Prayagraj was 0.2% Severe and 48% Good-or-Satisfactory. Longest clean-air streaks: Dehradun 41 days, Prayagraj 69 days.
Year-over-year progress
Dehradun has worsened by 19 AQI points (21.8%) from 2022 to 2024; Prayagraj has improved by 42 AQI points (34.4%) over the same window. The worst recorded day for Dehradun reached AQI 327 at Doon University (UKPCB) on 2024-01-19; Prayagraj hit AQI 416 at Nagar Nigam (UPPCB) on 2021-11-08.
Station-level disparity
Dehradun spans 1 CPCB stations with a 0-point spread (min 98, max 98); Prayagraj spans 3 stations with a 9-point spread (min 96, max 105).
Verdict
🏆 Dehradun has better air quality with an AQI of 35 compared to Prayagraj's 156. That's a significant difference of 121 points.