Kalyān vs Perundurai
Side-by-side air quality comparison between Kalyān 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, Kalyān averaged an AQI of 95 while Perundurai averaged 75 — a 20-point (27%) gap, with Kalyān the more polluted and Perundurai the cleaner of the two. On 57 days when both cities reported, Perundurai was cleaner on 55 of them; the average daily gap was 70 AQI points.
Seasonality & days
Kalyān peaks in January, while Perundurai peaks in November. Kalyān logged 0.1% Severe days and 46.4% Good-or-Satisfactory days; Perundurai was 0% Severe and 80.7% Good-or-Satisfactory. Longest clean-air streaks: Kalyān 78 days, Perundurai 13 days.
Year-over-year progress
The worst recorded day for Kalyān reached AQI 414 at Khadakpada (MPCB) on 2022-01-24; Perundurai hit AQI 153 at SIPCOT Industrial Park (TNPCB) on 2024-11-12.
Station-level disparity
Kalyān spans 2 CPCB stations with a 18-point spread (min 98, max 116); Perundurai spans 1 stations with a 0-point spread (min 75, max 75).