Hello Jurgen! The weather trend is based on air pressure. As this is still not an Apple characteristic, you can't use the app Home from Apple for the automation you want, but the app Eve. Other than that, you can use temperature or humidity in both app automation as a trigger. Please keep in mind that all automation requires a home hub, an Apple TV 4/4K and/or HomePod/mini. Best regards, Volker
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Aug 14, 2023