Fork of Fork of AQI Data in America by State
This visualization displays US Air Quality Index (AQI) data as a choropleth map, where each state is filled with a color representing its average AQI value. A time-series histogram of AQI readings is also present, allowing users to brush over a date range to filter the map's displayed data. Built with React and D3 v5, the map uses the `geoAlbersUsa` projection and `geoPath` to render state boundaries from TopoJSON, while the histogram uses `scaleTime` and `histogram` to bin data. The dataset is loaded via `d3.csv` from a GitHub-hosted CSV file.