Dehradun vs Howrah
Side-by-side air quality comparison between Dehradun and Howrah.
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 Howrah averaged 126 — a 20-point (19%) gap, with Howrah the more polluted and Dehradun the cleaner of the two. On 502 days when both cities reported, Dehradun was cleaner on 347 of them; the average daily gap was 71 AQI points.
Seasonality & days
Dehradun peaks in January, while Howrah peaks in December. Dehradun logged 0% Severe days and 62.8% Good-or-Satisfactory days; Howrah was 0.7% Severe and 48.7% Good-or-Satisfactory. Longest clean-air streaks: Dehradun 41 days, Howrah 120 days.
Year-over-year progress
Dehradun has worsened by 19 AQI points (21.8%) from 2022 to 2024; Howrah has improved by 32 AQI points (20.3%) over the same window. The worst recorded day for Dehradun reached AQI 327 at Doon University (UKPCB) on 2024-01-19; Howrah hit AQI 500 at Ghusuri (WBPCB) on 2017-04-15.
Station-level disparity
Dehradun spans 1 CPCB stations with a 0-point spread (min 98, max 98); Howrah spans 5 stations with a 116-point spread (min 111, max 227).