Dehradun vs Tālcher
Side-by-side air quality comparison between Dehradun and Tālcher.
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 | Tālcher |
|---|---|---|
| PM2.5(µg/m³) | 20.80 | 65.90 |
| PM10(µg/m³) | 20.80 | 72.20 |
| NO₂(µg/m³) | 41.40 | 25.60 |
| SO₂(µg/m³) | 3.80 | 5.80 |
| O₃(µg/m³) | 25.00 | 19.00 |
| CO(µg/m³) | 395.00 | 508.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dehradun averaged an AQI of 106 while Tālcher averaged 127 — a 21-point (20%) gap, with Tālcher the more polluted and Dehradun the cleaner of the two. On 358 days when both cities reported, Dehradun was cleaner on 205 of them; the average daily gap was 54 AQI points.
Seasonality & days
Dehradun peaks in January, while Tālcher peaks in December. Dehradun logged 0% Severe days and 62.8% Good-or-Satisfactory days; Tālcher was 0.2% Severe and 43.1% Good-or-Satisfactory. Longest clean-air streaks: Dehradun 41 days, Tālcher 44 days.
Year-over-year progress
Dehradun has worsened by 19 AQI points (21.8%) from 2022 to 2024; Tālcher has improved by 63 AQI points (33.2%) over the same window. The worst recorded day for Dehradun reached AQI 327 at Doon University (UKPCB) on 2024-01-19; Tālcher hit AQI 414 at Talcher (OSPCB) on 2018-11-27.
Station-level disparity
Dehradun spans 1 CPCB stations with a 0-point spread (min 98, max 98); Tālcher spans 1 stations with a 0-point spread (min 132, max 132).
Verdict
🏆 Dehradun has better air quality with an AQI of 35 compared to Tālcher's 120. That's a significant difference of 85 points.