Arrah vs Perundurai
Side-by-side air quality comparison between Arrah 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, Arrah averaged an AQI of 123 while Perundurai averaged 75 — a 48-point (64%) gap, with Arrah the more polluted and Perundurai the cleaner of the two. On 45 days when both cities reported, Perundurai was cleaner on 33 of them; the average daily gap was 45 AQI points.
Seasonality & days
Arrah peaks in January, while Perundurai peaks in November. Arrah logged 0.2% Severe days and 32.3% Good-or-Satisfactory days; Perundurai was 0% Severe and 80.7% Good-or-Satisfactory. Longest clean-air streaks: Arrah 11 days, Perundurai 13 days.
Year-over-year progress
The worst recorded day for Arrah reached AQI 420 at New DM Office (BSPCB) on 2021-12-21; Perundurai hit AQI 153 at SIPCOT Industrial Park (TNPCB) on 2024-11-12.
Station-level disparity
Arrah spans 1 CPCB stations with a 0-point spread (min 162, max 162); Perundurai spans 1 stations with a 0-point spread (min 75, max 75).