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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.

6 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 Right18 Sept 2026, 20:46:03 UTC

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

    • 6.5M rows (estimated)
    • 1,803 views
    • 9 uses. Uses include downloads and successful API/MCP queries
  2. Monthly

    Mostly Right6 Oct 2026, 17:12:38 UTC

    Prague Airbnb listings and hosts by city district since 2024

    • 401.0K rows (estimated)
    • 471 views
    • 492 uses. Uses include downloads and successful API/MCP queries
  3. Daily

    Mostly Right9 Sept 2026, 13:52:18 UTC

    European harvests and weather, 2000–2024

    • 7.6K rows (estimated)
    • 367 views
    • 1 use. Uses include downloads and successful API/MCP queries
  4. Daily

    Mostly Right15 Sept 2026, 05:39:29 UTC

    NYC flight delays and weather, 2023–2025

    • 1.1M rows (estimated)
    • 364 views
    • 1 use. Uses include downloads and successful API/MCP queries
  5. Weekly

    Mostly Right20 Sept 2026, 09:26:18 UTC

    Czech horse racing results, 1997–2026

    • 138.8K rows (estimated)
    • 344 views
    • 25 uses. Uses include downloads and successful API/MCP queries

  6. Mostly Right11 Oct 2026, 23:52:00 UTC

    Solana validator performance and behavior

    • 2.6M rows (estimated)
    • 47 views
    • 12 uses. Uses include downloads and successful API/MCP queries