Coimbatore vs Tiruchirappalli
Side-by-side air quality comparison between Coimbatore and Tiruchirappalli.
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 Tiruchirappalli averaged 50 — a 16-point (32%) gap, with Coimbatore the more polluted and Tiruchirappalli the cleaner of the two. On 79 days when both cities reported, Tiruchirappalli was cleaner on 74 of them; the average daily gap was 39 AQI points.
Seasonality & days
Coimbatore peaks in November, while Tiruchirappalli peaks in January. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Tiruchirappalli was 0% Severe and 96.5% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Tiruchirappalli 46 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Tiruchirappalli has improved by 23 AQI points (31.5%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Tiruchirappalli hit AQI 114 at St Joseph College (TNPCB) on 2024-01-14.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Tiruchirappalli spans 1 stations with a 0-point spread (min 52, max 52).