hass-core/homeassistant/components/accuweather/translations/sensor.ja.json

{
    "state": {
        "accuweather__pressure_tendency": {
            "falling": "\u4e0b\u964d",
            "rising": "\u4e0a\u6607",
            "steady": "\u5b89\u5b9a"
        }
    }
}