This bubble chart visualizes correlations between average temperature, humidity, and pressure across 25 states, with each circle’s position encoding temperature (x-axis) and humidity (y-axis), while its radius and color represent pressure and state, respectively. Built with D3 v7, it uses `d3.scaleLinear` for axes and bubble sizing, `d3.scaleOrdinal` with `d3.interpolateTurbo` for categorical coloring, and includes a tooltip with mouseover events. The visualization renders as SVG with a legend for pressure values, and reads from a CSV file containing state-level environmental metrics.