Dehradun vs Thiruvananthapuram
Side-by-side air quality comparison between Dehradun and Thiruvananthapuram.
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 | Thiruvananthapuram |
|---|---|---|
| PM2.5(µg/m³) | 14.40 | 5.30 |
| PM10(µg/m³) | 14.60 | 9.50 |
| NO₂(µg/m³) | 25.40 | 1.50 |
| SO₂(µg/m³) | 4.10 | 0.40 |
| O₃(µg/m³) | 71.00 | 38.00 |
| CO(µg/m³) | 350.00 | 102.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dehradun averaged an AQI of 106 while Thiruvananthapuram averaged 56 — a 50-point (89%) gap, with Dehradun the more polluted and Thiruvananthapuram the cleaner of the two. On 499 days when both cities reported, Thiruvananthapuram was cleaner on 319 of them; the average daily gap was 49 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; Thiruvananthapuram was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Dehradun 41 days, Thiruvananthapuram 172 days.
Year-over-year progress
Dehradun has worsened by 19 AQI points (21.8%) from 2022 to 2024; Thiruvananthapuram has improved by 11 AQI points (16.4%) over the same window. The worst recorded day for Dehradun reached AQI 327 at Doon University (UKPCB) on 2024-01-19; Thiruvananthapuram hit AQI 387 at Plammoodu Thiruvananthapuram (PCB) on 2021-08-30.
Station-level disparity
Dehradun spans 1 CPCB stations with a 0-point spread (min 98, max 98); Thiruvananthapuram spans 2 stations with a 7-point spread (min 57, max 64).
Verdict
🏆 Thiruvananthapuram has better air quality with an AQI of 10 compared to Dehradun's 24.