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Json AQI Data in America with Histogram and Brushing

✓ Published0🌍 Public
CChase Hall
Last edited Aug 1, 2022
Created on Aug 1, 2022

This interactive visualization displays US Environmental Protection Agency Air Quality Index (AQI) readings for ozone monitoring sites, overlaid as colored circles on a geographic map of the United States. The map uses d3.geoAlbersUsa with d3.geoPath, and each circle’s color reflects its AQI value via a d3.scaleQuantile. A brushing histogram at the bottom, built with d3.brushX and d3.bin, filters the map’s circles by date range, with the time series generated using d3.scaleTime and d3.timeMonths. The application is built in React with D3 v5, rendering all elements as SVG.

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