This area chart visualizes daily temperatures over the past week, combining a smooth line and an orange filled area beneath it to highlight trends. Built with D3 v5, it uses `scaleTime` and `scaleLinear` for axes, with `area` and `line` generators employing `curveBasis` for smoothing. The SVG renders temperature data parsed from a CSV file, with a black line and shaded region, while custom axis labels and gridlines are styled via CSS.