Sardine Weather

Leading weather prediction

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Sardine Weather turns the NOAA forecast into a tradable signal — showing where Kalshi's daily temperature contracts look mispriced, updated every 2.5 minutes. — What you get — • SIGNALS. For 19 US airports (JFK, BOS, ORD, DFW, LAX, ATL, and more), every bucket on the Kalshi ladder with cost, fair value, and edge. Ranked by edge so the best-priced contracts are at the top. • CITIES. Daily high and low forecasts per city, next to NOAA's official forecast and the live observed temperature. • ACCURACY. Transparent per-model MAE, bucket hit rate, and historical accuracy by time-to-peak. See how the model has performed across the last 30 days of settlements — no cherry-picking. • INTRADAY CHART. Tap any city to see how the prediction evolves through the day as new observations roll in. — Free vs Pro — FREE: signals with a 15-minute delay, aggregate model accuracy, and the full list of cities. Enough to evaluate the model before upgrading. PRO ($34.99/mo or $249/yr): zero-latency signals, per-city historical accuracy, confidence tiers (high / moderate / low), clear edge values, and direct open-in-browser for every Kalshi market. — About the model — Sardine blends NOAA and Open-Meteo forecasts with per-city learned bias correction and live METAR observations. Predictions update every 2.5 minutes during the day and are scored against the final NOAA CLI settlement each morning. The model continues learning from each settlement automatically. — Not financial advice — Sardine Weather publishes probability estimates for weather outcomes. It does not place trades, hold positions, or provide financial guidance. Fair value and edge are mathematical estimates — you decide whether and how to act on them. Data: NOAA / NWS (public domain) and Open-Meteo. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sardine-weather.com/privacy

Ratings & Reviews

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Today's low/high locked-in banner: when the day's extremum has already been observed, the bucket ladder now shows a clear "locked in" status instead of an empty markets message.

Version 1.0.2

The developer, James O'Donnell, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • James O'Donnell
    Size
    • 44.1 MB
    Category
    • Weather
    Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    • Sardine Weather Pro Yearly $249.99
    • Sardine Weather Pro Monthly $34.99
    • Learn More
    Copyright
    • © 2026 James O'Donnell
  • Developer Website
  • Privacy Policy

    • More by James O'Donnell