Dehradun vs Tumkur
Side-by-side air quality comparison between Dehradun and Tumkur.
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 | Tumkur |
|---|---|---|
| PM2.5(µg/m³) | 14.40 | 3.40 |
| PM10(µg/m³) | 14.60 | 4.50 |
| NO₂(µg/m³) | 25.40 | 6.40 |
| SO₂(µg/m³) | 4.10 | 1.30 |
| O₃(µg/m³) | 71.00 | 35.00 |
| CO(µg/m³) | 350.00 | 124.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dehradun averaged an AQI of 106 while Tumkur averaged 88 — a 18-point (20%) gap, with Dehradun the more polluted and Tumkur the cleaner of the two. On 481 days when both cities reported, Dehradun was cleaner on 243 of them; the average daily gap was 54 AQI points.
Seasonality & days
Dehradun peaks in January, while Tumkur peaks in December. Dehradun logged 0% Severe days and 62.8% Good-or-Satisfactory days; Tumkur was 0% Severe and 54% Good-or-Satisfactory. Longest clean-air streaks: Dehradun 41 days, Tumkur 20 days.
Year-over-year progress
Dehradun has worsened by 19 AQI points (21.8%) from 2022 to 2024; Tumkur has improved by 69 AQI points (43.9%) over the same window. The worst recorded day for Dehradun reached AQI 327 at Doon University (UKPCB) on 2024-01-19; Tumkur hit AQI 355 at Thimmalapura (KSPCB) on 2023-02-15.
Station-level disparity
Dehradun spans 1 CPCB stations with a 0-point spread (min 98, max 98); Tumkur spans 1 stations with a 0-point spread (min 97, max 97).
Verdict
🏆 Tumkur has better air quality with an AQI of 6 compared to Dehradun's 24.