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weather-Forecast

Each WeatherReport component contains some number of Forecast components. At any time, children Today and Tomorrow are available. Depending on the current day of week, the remaining children are named appropriately for that day of the week.
Figure 13.   Forecast components
Image

For the NWS provider, 7 Forecast components are created by default, based upon the Outlook value specified in the NwsWeatherProvider component. Each Forecast component contains a number of read-only status properties for predicted weather items, as well as sunrise and sunset times

You can drag any Forecast component onto a Px page for an iconic-based Forecast View.

Name Value Description
Status ok, alarm, fault, stale Typically “ok” if a connection was made. Other possible statuses include:
  • alarm — if a hazardous condition is imminent/detected in an NWS provider-issued advisory. If alarm, related information is also in properties Weather Summary and State.
  • fault — if the weather provider references an invalid weather station.
  • stale — if a weather update connection fails, or for a NwsWeatherProvider, if the reported observation time (Observation property) is more than 2 hours in the past. All other properties with status (Sundown, Temp, State, Humidity, and so on) also assume this stale status. The timeout for this “failed connection at update attempt” to a NWS provider is fixed at 15 seconds.
Last Update   Date/timestamp of the station’s last weather report update, in Baja AbsTime format.
Sunrise   Timestamp for sunrise, in Baja Time format.
Sunset   Timestamp for sunset, in Baja Time format.
High   Predicted high temperature as a StatusNumeric value.
Low   Predicted low temperature as a StatusNumeric value.
Weather Summary   Text descriptor summarizing current weather conditions, as a StatusString value. This text string is evaluated and converted to a “State” enumerated value (next property). If CurrentConditions has an “alarm” status, this will describe the alarm condition.
State   StatusEnum value derived from the received “weather summary” text. Enumerations were added for hazardous conditions, such as received in provider-issued advisories.
Ozone   Level of ozone in the air, in parts per million (ppm), as a StatusNumeric value.
Particulate Matter   Level of particulate matter in the air, in micrograms per cubic meter (ug/m^3), as a StatusNumeric value.
 
NOTE:
  • Related to these last two properties, the CurrentConditions component also has a Current Air Quality View.
  • The WeatherService retrieves air quality metrics by connecting to a U.S. EPA (Environmental Protection Agency) server.

 

Related Links

  • Weather components (Parent Topic)

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