Dehradun vs Samastipur
Side-by-side air quality comparison between Dehradun and Samastipur.
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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dehradun averaged an AQI of 106 while Samastipur averaged 134 — a 28-point (26%) gap, with Samastipur the more polluted and Dehradun the cleaner of the two. On 617 days when both cities reported, Dehradun was cleaner on 486 of them; the average daily gap was 89 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; Samastipur was 1.4% Severe and 23.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Dehradun 41 days, Samastipur 9 days.
Year-over-year progress
Dehradun has worsened by 19 AQI points (21.8%) from 2022 to 2024; Samastipur has improved by 84 AQI points (38.5%) over the same window. The worst recorded day for Dehradun reached AQI 327 at Doon University (UKPCB) on 2024-01-19; Samastipur hit AQI 459 at DM Office Kasipur (BSPCB) on 2023-01-01.
Station-level disparity
Dehradun spans 1 CPCB stations with a 0-point spread (min 98, max 98); Samastipur spans 1 stations with a 0-point spread (min 177, max 177).