Dehradun vs Patna
Side-by-side air quality comparison between Dehradun and Patna.
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 Patna averaged 172 — a 66-point (62%) gap, with Patna the more polluted and Dehradun the cleaner of the two. On 800 days when both cities reported, Dehradun was cleaner on 758 of them; the average daily gap was 144 AQI points.
Seasonality & days
Dehradun peaks in January, while Patna peaks in December. Dehradun logged 0% Severe days and 62.8% Good-or-Satisfactory days; Patna was 7.5% Severe and 19.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Dehradun 41 days, Patna 30 days.
Year-over-year progress
Dehradun has worsened by 19 AQI points (21.8%) from 2022 to 2024; Patna has improved by 40 AQI points (18.9%) over the same window. The worst recorded day for Dehradun reached AQI 327 at Doon University (UKPCB) on 2024-01-19; Patna hit AQI 491 at IGSC Planetarium Complex (BSPCB) on 2016-01-01.
Station-level disparity
Dehradun spans 1 CPCB stations with a 0-point spread (min 98, max 98); Patna spans 6 stations with a 39-point spread (min 154, max 193).