This visualization displays hourly temperature readings over one week, with a blue line tracing the fluctuations and a maroon fill beneath it. The chart uses D3 v5’s scaleTime, scaleLinear, axisBottom, axisLeft, and line with curveBasis to render the data, while nest() groups the dataset by city to generate multiple series. Data is loaded via d3.csv from a remote dataset, and the SVG is appended with axes, gridlines, and labels. The visualization emphasizes the daily temperature cycles and overall weekly trend.