This interactive line chart displays Air Quality Index (AQI) values for Bangor, Maine over time, with a dropdown menu allowing users to toggle between Ozone and PM2.5 pollutant data. The visualization uses React for the interface and D3 v5’s `scaleTime`, `scaleLinear`, and `line` with `curveNatural` to render smooth SVG paths and circles. Data is loaded from a local CSV file, with axes generated via custom React components and ticks formatted to show month labels.