Dehradun vs Perundurai
Side-by-side air quality comparison between Dehradun and Perundurai.
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 Perundurai averaged 75 — a 31-point (41%) gap, with Dehradun the more polluted and Perundurai the cleaner of the two. On 53 days when both cities reported, Perundurai was cleaner on 42 of them; the average daily gap was 72 AQI points.
Seasonality & days
Dehradun peaks in January, while Perundurai peaks in November. Dehradun logged 0% Severe days and 62.8% Good-or-Satisfactory days; Perundurai was 0% Severe and 80.7% Good-or-Satisfactory. Longest clean-air streaks: Dehradun 41 days, Perundurai 13 days.
Year-over-year progress
The worst recorded day for Dehradun reached AQI 327 at Doon University (UKPCB) on 2024-01-19; Perundurai hit AQI 153 at SIPCOT Industrial Park (TNPCB) on 2024-11-12.
Station-level disparity
Dehradun spans 1 CPCB stations with a 0-point spread (min 98, max 98); Perundurai spans 1 stations with a 0-point spread (min 75, max 75).