Dehradun vs Haldia
Side-by-side air quality comparison between Dehradun and Haldia.
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 | Haldia |
|---|---|---|
| PM2.5(µg/m³) | 20.80 | 50.20 |
| PM10(µg/m³) | 20.80 | 55.20 |
| NO₂(µg/m³) | 41.40 | 14.30 |
| SO₂(µg/m³) | 3.80 | 9.50 |
| O₃(µg/m³) | 25.00 | 79.00 |
| CO(µg/m³) | 395.00 | 280.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dehradun averaged an AQI of 106 while Haldia averaged 90 — a 16-point (18%) gap, with Dehradun the more polluted and Haldia the cleaner of the two. On 620 days when both cities reported, Haldia was cleaner on 389 of them; the average daily gap was 48 AQI points.
Seasonality & days
Dehradun peaks in January, while Haldia peaks in December. Dehradun logged 0% Severe days and 62.8% Good-or-Satisfactory days; Haldia was 0% Severe and 65.4% Good-or-Satisfactory. Longest clean-air streaks: Dehradun 41 days, Haldia 51 days.
Year-over-year progress
Dehradun has worsened by 19 AQI points (21.8%) from 2022 to 2024; Haldia has worsened by 8 AQI points (9.8%) over the same window. The worst recorded day for Dehradun reached AQI 327 at Doon University (UKPCB) on 2024-01-19; Haldia hit AQI 322 at Priyambada Housing Estate (WBPCB) on 2024-11-26.
Station-level disparity
Dehradun spans 1 CPCB stations with a 0-point spread (min 98, max 98); Haldia spans 1 stations with a 0-point spread (min 86, max 86).
Verdict
🏆 Dehradun has better air quality with an AQI of 35 compared to Haldia's 84.