Frost Alert
Help when you need it
Frost Alert helps you assess overnight frost risk for saved growing locations using Apple Weather forecasts and your selected plant sensitivity.
Watch means conditions may become marginal for your selected plant threshold. It can be triggered by forecast lows near the threshold, calm wind, clear sky, humidity, dew point, and the overnight timing of the risk.
Frost Alert schedules local notifications from the latest forecast refreshed by the app. iOS background refresh can help keep alerts updated, but it is not guaranteed if the app is force-quit, rarely opened, or restricted by the system.
Open Frost Alert every few days during frost season, and whenever conditions are changing quickly, so forecasts and scheduled alerts stay current.
Yes, but treat forecasts as guidance. For high-value crops, use local sensors and professional frost-protection systems as needed.
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