Weather Data Model

The weather data model describes available weather data schemas commonly used in weather services and available via RTDIP.

15-day Hourly Forecast

This model returns weather forecasts starting with the current day. Forecast data is using TAF format, which is similar to METAR but contains extra forecast variables

Type	Name	Description
String	class	Data identifier
Integer	clds	Hourly average cloud cover expressed as a percentage.
String	day_ind	This data field indicates whether it is daytime or nighttime based on the Local Apparent Time of the location.
Integer	dewpt	The temperature which air must be cooled at constant pressure to reach saturation. The Dew Point is also an indirect measure of the humidity of the air. The Dew Point will never exceed the Temperature. When the Dew Point and Temperature are equal, clouds or fog will typically form. The closer the values of Temperature and Dew Point, the higher the relative humidity.
String	dow	Day of week
Float	expire_time_gmt	Expiration time in UNIX seconds
Float	fcst_valid	Time forecast is valid in UNIX seconds
String	fcst_valid_local	Time forecast is valid in local apparent time
Integer	feels_like	Hourly feels like temperature. An apparent temperature. It represents what the air temperature “feels like” on exposed human skin due to the combined effect of the wind chill or heat index.
String	golf_category	The Golf Index Category expressed as a worded phrase the weather conditions for playing golf
Integer	golf_index	The Golf Index expresses on a scale of 0 to 10 the weather conditions for playing golf Not applicable at night. 0-2=Very Poor, 3=Poor, 4-5=Fair, 6-7=Good, 8-9=Very Good, 10=Excellent
Integer	gust	The maximum expected wind gust speed.
Integer	hi	Hourly maximum heat index. An apparent temperature. It represents what the air temperature “feels like” on exposed human skin due to the combined effect of warm temperatures and high humidity. When the temperature is 70°F or higher, the Feels Like value represents the computed Heat Index. For temperatures between 40°F and 70°F, the Feels Like value and Temperature are the same, regardless of wind speed and humidity, so use the Temperature value.
Integer	icon_code	This number is the key to the weather icon lookup. The data field shows the icon number that is matched to represent the observed weather conditions. Please refer to the Forecast Icon Code, Weather Phrases and Images document.
Integer	icon_extd	Code representing explicit full set sensible weather. Please refer to the Forecast Icon Code, Weather Phrases and Images document.
Float	mslp	Hourly mean sea level pressure
Integer	num	This data field is the sequential number that identifies each of the forecasted days in the API. They start on day 1, which is the forecast for the current day. Then the forecast for tomorrow uses number 2, then number 3 for the day after tomorrow, and so forth.
String	phrase_12char	Hourly sensible weather phrase
String	phrase_22char	Hourly sensible weather phrase
String	phrase_32char	Hourly sensible weather phrase
Integer	pop	Hourly maximum probability of precipitation
String	precip_type	The short text describing the expected type accumulation associated with the Probability of Precipitation (POP) display for the hour.
Float	qpf	The forecasted measurable precipitation (liquid or liquid equivalent) during the hour.
Integer	rh	The relative humidity of the air, which is defined as the ratio of the amount of water vapor in the air to the amount of vapor required to bring the air to saturation at a constant temperature. Relative humidity is always expressed as a percentage.
Integer	severity	A number denoting how impactful is the forecasted weather for this hour. Can be used to determine the graphical treatment of the weather display such as using red font on weather.com
Float	snow_qpf	The forecasted hourly snow accumulation during the hour.
String	subphrase_pt1	Part 1 of 3-part hourly sensible weather phrase
String	subphrase_pt2	Part 2 of 3-part hourly sensible weather phrase
String	subphrase_pt3	Part 3 of 3-part hourly sensible weather phrase
Integer	temp	The temperature of the air, measured by a thermometer 1.5 meters (4.5 feet) above the ground that is shaded from the other elements. You will receive this data field in Fahrenheit degrees or Celsius degrees.
String	uv_desc	The UV Index Description which complements the UV Index value by providing an associated level of risk of skin damage due to exposure.
Integer	uv_index	Hourly maximum UV index
Decimal	uv_index_raw	The non-truncated UV Index which is the intensity of the solar radiation based on a number of factors.
Integer	uv_warning	TWC-created UV warning based on UV index of 11 or greater.
Decimal	vis	Prevailing hourly visibility
Integer	wc	Hourly minimum wind chill. An apparent temperature. It represents what the air temperature “feels like” on exposed human skin due to the combined effect of the cold temperatures and wind speed. When the temperature is 61°F or lower the Feels Like value represents the computed Wind Chill so display the Wind Chill value. For temperatures between 61°F and 75°F, the Feels Like value and Temperature are the same, regardless of wind speed and humidity, so display the Temperature value.
Integer	wdir	Hourly average wind direction in magnetic notation.
String	wdir_cardinal	Hourly average wind direction in cardinal notation.
Integer	wspd	The maximum forecasted hourly wind speed. The wind is treated as a vector; hence, winds must have direction and magnitude (speed). The wind information reported in the hourly current conditions corresponds to a 10-minute average called the sustained wind speed. Sudden or brief variations in the wind speed are known as “wind gusts” and are reported in a separate data field. Wind directions are always expressed as "from whence the wind blows" meaning that a North wind blows from North to South. If you face North in a North wind the wind is at your face. Face southward and the North wind is at your back.
String	wxman	Code combining Hourly sensible weather and temperature conditions

References

Reference	Description
METAR	Description to METAR
TAF	Description of TAF