Correlation Explorer
Pick two indicators to see how countries and regions compare — bubble size = population · click any dot for details
2019
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Source: World Bank Open Data
Air Pollution vs Population · 2019
In 2019, Air Pollution (PM2.5) and Total Population show no meaningful linear correlation (r = 0.19) across 200 countries.
No consistent global pattern links air pollution to population — the relationship varies widely across regions and income levels.
Use the interactive bubble chart to explore individual countries and regions, or adjust the year slider to see how this relationship has evolved over time. Bubble size represents population.