Ambala vs Coimbatore
Side-by-side air quality comparison between Ambala and Coimbatore.
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, Ambala averaged an AQI of 94 while Coimbatore averaged 66 — a 28-point (42%) gap, with Ambala the more polluted and Coimbatore the cleaner of the two. On 915 days when both cities reported, Coimbatore was cleaner on 750 of them; the average daily gap was 74 AQI points.
Seasonality & days
Both cities see their worst air in November on average. Ambala logged 0.2% Severe days and 46.5% Good-or-Satisfactory days; Coimbatore was 0% Severe and 90.5% Good-or-Satisfactory. Longest clean-air streaks: Ambala 44 days, Coimbatore 32 days.
Year-over-year progress
Ambala has improved by 52 AQI points (35.6%) from 2019 to 2024; Coimbatore has improved by 5 AQI points (7%) over the same window. The worst recorded day for Ambala reached AQI 452 at Patti Mehar (HSPCB) on 2020-11-04; Coimbatore hit AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28.
Station-level disparity
Ambala spans 1 CPCB stations with a 0-point spread (min 126, max 126); Coimbatore spans 2 stations with a 1-point spread (min 63, max 64).