Kollam vs Ludhiana
Side-by-side air quality comparison between Kollam and Ludhiana.
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, Kollam averaged an AQI of 84 while Ludhiana averaged 117 — a 33-point (39%) gap, with Ludhiana the more polluted and Kollam the cleaner of the two. On 500 days when both cities reported, Kollam was cleaner on 299 of them; the average daily gap was 51 AQI points.
Seasonality & days
Kollam peaks in January, while Ludhiana peaks in November. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Ludhiana was 0.3% Severe and 53.599999999999994% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Ludhiana 53 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Ludhiana has improved by 79 AQI points (40.3%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Ludhiana hit AQI 488 at Punjab Agricultural University (PPCB) on 2018-06-14.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Ludhiana spans 1 stations with a 0-point spread (min 118, max 118).