Dehradun vs Ujjain
Side-by-side air quality comparison between Dehradun and Ujjain.
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 | Ujjain |
|---|---|---|
| PM2.5(µg/m³) | 20.80 | 32.40 |
| PM10(µg/m³) | 20.80 | 47.70 |
| NO₂(µg/m³) | 41.40 | 6.80 |
| SO₂(µg/m³) | 3.80 | 13.70 |
| O₃(µg/m³) | 25.00 | 66.00 |
| CO(µg/m³) | 395.00 | 215.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dehradun averaged an AQI of 106 while Ujjain averaged 116 — a 10-point (9%) gap, with Ujjain the more polluted and Dehradun the cleaner of the two. On 701 days when both cities reported, Dehradun was cleaner on 498 of them; the average daily gap was 50 AQI points.
Seasonality & days
Dehradun peaks in January, while Ujjain peaks in November. Dehradun logged 0% Severe days and 62.8% Good-or-Satisfactory days; Ujjain was 0.1% Severe and 33.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Dehradun 41 days, Ujjain 67 days.
Year-over-year progress
Dehradun has worsened by 19 AQI points (21.8%) from 2022 to 2024; Ujjain has improved by 71 AQI points (38%) over the same window. The worst recorded day for Dehradun reached AQI 327 at Doon University (UKPCB) on 2024-01-19; Ujjain hit AQI 500 at Mahakaleshwar Temple (MPPCB) on 2023-03-10.
Station-level disparity
Dehradun spans 1 CPCB stations with a 0-point spread (min 98, max 98); Ujjain spans 1 stations with a 0-point spread (min 131, max 131).
Verdict
🏆 Dehradun has better air quality with an AQI of 35 compared to Ujjain's 55.