This visualization presents daily weather data through two D3.js v7 SVG charts: a multi-series line chart and a combined chart. It uses `d3.csv` to load data, `d3.rollups` with `d3.mean` to aggregate values by date, and `d3.line` with a monotone curve to render temperature, humidity, and rainfall trends over time. The line chart includes gridlines, axes, and a legend, while the second chart combines multiple mark types. Data is sourced from a remote CSV file containing date, temperature, humidity, rainfall, and wind speed columns.