Coimbatore vs Perundurai
Side-by-side air quality comparison between Coimbatore 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, Coimbatore averaged an AQI of 66 while Perundurai averaged 75 — a 9-point (14%) gap, with Perundurai the more polluted and Coimbatore the cleaner of the two. On 57 days when both cities reported, Perundurai was cleaner on 45 of them; the average daily gap was 27 AQI points.
Seasonality & days
Both cities see their worst air in November on average. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Perundurai was 0% Severe and 80.7% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Perundurai 13 days.
Year-over-year progress
The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Perundurai hit AQI 153 at SIPCOT Industrial Park (TNPCB) on 2024-11-12.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Perundurai spans 1 stations with a 0-point spread (min 75, max 75).