2025 30-Day Chart Challenge Visualizations

A month of data viz for the #30DayChartChallenge

For the month of April, users are challenged to create daily data visualizations that fit within 5 major categories: comparisons, distributions, relationships, timeseries, and uncertainties. Each day, a unique prompt inspires participants to use a variety of chart types and get creative with their data. The USGS VizLab was excited to participate!

Comparisons - Fractions

Comparisons - Slope

Comparisons - Circular

Comparisons - Big or Small

Comparisons - Big or Small (Image 2)

Comparisons - Big or Small (Image 3)

Comparisons - Big or Small (Image 4)

Comparisons - Ranking

Comparisons - Florence Nightingale Theme Day

Distributions - Outliers

Distributions - Histogram

Distributions - Histogram (Comparison to 30-Year Average)

Distributions - Diverging

Distributions - Multi-modal

Distributions - Data.gov (Data day)

Distributions - Stripes

Distributions - Stripes (Image 2)

Distributions - Stripes (Image 3)

Distributions - Stripes (Image 4)

Relationships - Clusters

Relationships - Clusters, Global economic value for Salmonidae family of fish

Relationships - Clusters, Global economic value for the Centrarchidae family of fish

Relationships - Clusters, Global economic value for the Anguillidae family of fish

Relationships - Kinship

Relationships - Complicated (Image 1)

Relationships - Complicated (Image 2)

Relationships - Complicated (Image 3)

Relationships - Complicated (Image 4)

Relationships - Complicated (Image 5)

Relationships - Complicated (Image 6)

Relationships - Negative

Relationships - Birds

Timeseries - Smooth

Time Series - Urbanization (Timeseries Maps)

Time Series - Urbanization (Stacked Area Chart Plots)

Timeseries - Fossils

Timeseries - Stars

Timeseries - Log scale

Timeseries - Log scale (Image 2)

Uncertainties - Risk

Uncertainties - Monochrome

Uncertainties - Noise

Uncertainties - Inclusion

Uncertainties - Extraterrestrial

Uncertainties - National Geographic (Theme Day)