A stylized line chart visualizes San Francisco weekly temperature trends over time, with each data point rendered as a circle tooltip. Built with React and D3 v5, it uses `scaleLinear` for both axes and `extent` to set domains from CSV data loaded via `d3.csv`. The SVG rendering includes custom axis components with formatted tick labels using `d3.format`, while the Poppins font and muted teal color style the minimalist design.