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All open datasets

Explore open, documented datasets for analysis and machine learning, with clear licences, JSON API access, and Parquet downloads.

2 datasets

Every dataset here is published as immutable Apache Parquet versions with a documented column schema, column profiles, an explicit licence and a named publisher. Read the schema and a sample of real rows without an account; sign up free to run bounded JSON queries or download the whole snapshot for training, backtesting or analysis. Agents can do the same over the Model Context Protocol at /api/mcp, or read /llms-full.txt for the whole catalogue in one file.

  1. Hourly

    Mostly Right16 Oct 2026, 04:10:54 UTC

    US Weather Reports and Daily Highs in 20 Cities

    • 1.4M rows (estimated)
    • 5,639 views
    • 622 uses. Uses include downloads and successful API/MCP queries
  2. Hourly

    Mostly Right18 Sept 2026, 20:46:03 UTC

    Hourly rainfall and gauge history, U.S. cities, 2000–2026

    • 6.5M rows (estimated)
    • 3,339 views
    • 9 uses. Uses include downloads and successful API/MCP queries