Coimbatore vs Tumkur
Side-by-side air quality comparison between Coimbatore and Tumkur.
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 Tumkur averaged 88 — a 22-point (33%) gap, with Tumkur the more polluted and Coimbatore the cleaner of the two. On 242 days when both cities reported, Coimbatore was cleaner on 160 of them; the average daily gap was 44 AQI points.
Seasonality & days
Coimbatore peaks in November, while Tumkur peaks in December. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Tumkur was 0% Severe and 54% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Tumkur 20 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Tumkur has improved by 69 AQI points (43.9%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Tumkur hit AQI 355 at Thimmalapura (KSPCB) on 2023-02-15.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Tumkur spans 1 stations with a 0-point spread (min 97, max 97).