# Sardine Weather — Leading weather prediction

> Leading weather prediction (iPhone/iPad app by James O'Donnell.)

- Source: https://appshunter.io/ios/app/sardine-weather/id6762632786 (this page in markdown: same URL + `.md`)
- Developer: [James O'Donnell](https://appshunter.io/developer/1808196631)
- Category: Weather, Finance
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.1 · 42 MB
- Languages: English
- Released: 2026-04-23
- Data updated: 2026-07-29
- User reviews in markdown: https://appshunter.io/ios/app/sardine-weather/id6762632786/reviews.md

## What is Sardine Weather?

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

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Sardine Weather Pro Monthly | $34.99 | per month |
| Sardine Weather Pro Yearly | $249.99 | per year |


## Chart rankings

- #191 in Top Grossing · Weather (US App Store)


## Version history (last 2 releases)

### 1.0.2 — 2026-06-09

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.

### 1.0 — 2026-04-24

No release notes.

## More apps by James O'Donnell

- [Forme AI](https://appshunter.io/ios/app/forme-ai/id6744562779)
- [BunnyTime](https://appshunter.io/ios/app/bunnytime/id6755092394)

All apps by James O'Donnell: https://appshunter.io/developer/1808196631

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-29.*