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AQI Data in America by county

✓ Published4🌍 Public
CChase Hall
Last edited Nov 8, 2022
Created on Aug 2, 2022

This interactive visualization displays a choropleth map of air quality index (AQI) data across U.S. counties, with each county colored by its AQI value according to a quantile scale. A brushed time-series histogram below the map filters the displayed data by collection date, allowing users to explore how AQI varies temporally. The map uses d3.geoPath with a geoAlbers projection and topojson county boundaries, while counties without data appear gray. The histogram is built with d3.bin and d3.brushX, and the entire interface is rendered as SVG within a React framework, reading from a CSV dataset.

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MIT Licensed

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