Wind Roses II (2019–2025): Interactive Analysis of PM2.5 and Wind Direction in Portuguese Municipalities

This repository provides Wind Roses II (2019–2025), an interactive visualisation tool for analysing PM2.5 concentrations in relation to wind speed and direction across Portuguese municipalities. Developed in Observable and exported with the Observable Runtime, the notebook integrates seasonal and yearly filters, statistical averaging functions, and polar bar plots (wind roses) generated with Plotly. The code allows users to explore how fine particulate matter varies spatially and temporally, highlighting environmental dynamics embedded in air quality. The project includes the full runtime environment, source files, and styling for reproducible deployment and integration into web applications.