Platform Variables
A comprehensive list of all variables available across the API Platform.
| Variable Name | API Source | Unit | Description |
|---|---|---|---|
air.humidity.at-2m | Point Forecast API | %, percent | Relative humidity 2 meters above ground level. |
air.pressure.at-sea-level | Point Forecast API | Pa, pascal | Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the m... |
air.temperature.at-2m | Point Forecast API | K, Degrees Kelvin | Air temperature is the bulk temperature of the air, not the surface (skin) temperature. |
air.visibility | Point Forecast API | m, meter | The visibility is the distance at which something can be seen. |
airTemperature | Aviation API | Cel | The observed or forecast air temperature. |
air_temperature_1min_mean | Nowcast API | degC | Forecast of the station's 1-minute mean air temperature at the step time. The value is the mean of the forecast distribution at that time point. It ... |
airtemp_01hrmax | 1-Minute Observations API | degC | Air temperature maximum over last hour. |
airtemp_01hrmin | 1-Minute Observations API | degC | Air temperature minimum over last hour. |
airtemp_01mnavg | 1-Minute Observations API | degC | Air temperature averaged over 1 minute. |
atmosphere.convective.potential.energy | Point Forecast API | J/kg, joules per kilogram | Integrated amount of work that the upward (positive) buoyancy force would perform on a given mass of air (called an air parcel) if it rose vertically ... |
cld1amt_30mnavg | 1-Minute Observations API | okta | Cloud area fraction of lowest cloud layer averaged over 30 minutes. |
cld1hgt_30mnavg | 1-Minute Observations API | m | Base height of lowest cloud layer averaged over 30 minutes. |
cld2amt_30mnavg | 1-Minute Observations API | okta | Cloud area fraction of second lowest cloud layer averaged over 30 minutes. |
cld2hgt_30mnavg | 1-Minute Observations API | m | Base height of second lowest cloud layer averaged over 30 minutes. |
cld3amt_30mnavg | 1-Minute Observations API | okta | Base height of third lowest cloud layer averaged over 30 minutes. |
cld3hgt_30mnavg | 1-Minute Observations API | m | Cloud layer 3 base height averaged over 30 minutes. |
cloud | Aviation API | Ft | An object containing an array of cloud layers. Each layer specifies the cloud amount (e.g., Few, Scattered, Broken, Overcast) and base height. |
cloud.base.height | Point Forecast API | m, meter | A cloud base (or the base of the cloud) is the lowest altitude of the visible portion of a cloud. Cloud base refers to the base of the lowest cloud. H... |
cloud.cover | Point Forecast API | %, percent | Total cloud cover in the atmosphere column. "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest.... |
current.speed.eastward.at-sea-surface | Point Forecast API | m/s, meters per second | “Surface" means the lower boundary of the atmosphere. A velocity is a vector quantity. "Eastward" indicates a vector component which is positive when ... |
current.speed.eastward.at-sea-surface-no-tide | Point Forecast API | m/s, meters per second | The surface called 'surface' means the lower boundary of the atmosphere. 'Water' means water in all phases, including frozen i.e. ice and snow. A velo... |
current.speed.eastward.barotropic | Point Forecast API | m/s, meters per second | Average current over the full water column / to the bottom of the sea. A velocity is a vector quantity. "Eastward" indicates a vector component which ... |
current.speed.eastward.barotropic-no-tide | Point Forecast API | m/s, meters per second | A velocity is a vector quantity. 'Eastward' indicates a vector component which is positive when directed eastward (negative westward). |
current.speed.northward.at-sea-surface | Point Forecast API | m/s, meters per second | "Surface" means the lower boundary of the atmosphere. A velocity is a vector quantity. "Northward" indicates a vector component which is positive when... |
current.speed.northward.at-sea-surface-no-tide | Point Forecast API | m/s, meters per second | The surface called 'surface' means the lower boundary of the atmosphere. 'Water' means water in all phases, including frozen i.e. ice and snow. A velo... |
current.speed.northward.barotropic | Point Forecast API | m/s, meters per second | Average current over the full water column / to the bottom of the sea. A velocity is a vector quantity. "Northward" indicates a vector component which... |
current.speed.northward.barotropic-no-tide | Point Forecast API | m/s, meters per second | A velocity is a vector quantity. 'Northward' indicates a vector component which is positive when directed northward (negative southward). |
dewpointTemperature | Aviation API | Cel | The observed or forecast dewpoint temperature. |
dewtemp_01mnavg | 1-Minute Observations API | degC | Dew point temperature averaged over 1 minute. |
earth05_01mnavg | 1-Minute Observations API | degC | Soil temperature at depth of 5cm averaged over 1 minute. |
earth10_01mnavg | 1-Minute Observations API | degC | Soil temperature at depth of 10cm averaged over 1 minute. |
earth1m_01mnavg | 1-Minute Observations API | degC | Soil temperature at depth of 1m averaged over 1 minute. |
earth20_01mnavg | 1-Minute Observations API | degC | Soil temperature at depth of 20cm averaged over 1 minute. |
earth50_01mnavg | 1-Minute Observations API | degC | Soil temperature at depth of 50cm averaged over 1 minute. |
horizontalVisibility | Aviation API | m | The horizontal visibility distance. |
latitude | 1-Minute Observations API | degrees_north | Latitude. |
level | 1-Minute Observations API | meters | Level. Meters above Mean Sea Level (WGS84) or negative depth for ocean observations. |
longitude | 1-Minute Observations API | degrees_west | Longitude. |
power_v_01mnavg | 1-Minute Observations API | Volts | Station power supply voltage averaged over 1 minute. |
precipitation.rate | Point Forecast API | mm/hr, millimeters per hour | 'Precipitation' in the earth's atmosphere means precipitation of water in all phases. The abbreviation 'lwe' means liquid water equivalent. 'Precipita... |
presmsl_01hrmax | 1-Minute Observations API | hPa | Air pressure at mean sea level maximum over 1 hour. |
presmsl_01hrmin | 1-Minute Observations API | hPa | Air pressure at mean sea level minimum over 1 hour. |
presmsl_01mnavg | 1-Minute Observations API | hPa | Air pressure at mean sea level averaged over 1 minute. |
presqfe_01hrmax | 1-Minute Observations API | hPa | Air pressure at QFE maximum over 1 hour. |
presqfe_01hrmin | 1-Minute Observations API | hPa | Air pressure at QFE minimum over 1 hour. |
presqfe_01mnavg | 1-Minute Observations API | hPa | Air pressure at QFE averaged over 1 minute. |
presqnh_01hrmax | 1-Minute Observations API | hPa | Air pressure at QNH maximum over 1 hour. |
presqnh_01hrmin | 1-Minute Observations API | hPa | Air pressure at QNH minimum over 1 hour. |
presqnh_01mnavg | 1-Minute Observations API | hPa | Air pressure at QNH averaged over 1 minute. |
pressen_01hrchg | 1-Minute Observations API | hPa | Change in air pressure at sensor over 1 hour. |
pressen_01hrmax | 1-Minute Observations API | hPa | Air pressure at sensor maximum over 1 hour. |
pressen_01hrmin | 1-Minute Observations API | hPa | Air pressure at sensor minimum over 1 hour. |
pressen_01mnavg | 1-Minute Observations API | hPa | Air pressure at sensor averaged over 1 minute. |
prwxnum_15mnavg | 1-Minute Observations API | (None) | Present weather synop code for last 15 minutes. |
prwxst1_15mnavg | 1-Minute Observations API | (None) | Present weather METAR code for last 15 minutes from report 1. |
prwxst2_15mnavg | 1-Minute Observations API | (None) | Present weather METAR code for last 15 minutes from report 2. |
qnh | Aviation API | hPa | Altimeter setting (atmospheric pressure reduced to sea level). |
radiation.flux.downward.longwave | Point Forecast API | W/m^2, irradiance, or radiant flux density | The surface called 'surface' means the lower boundary of the atmosphere. 'longwave' means longwave radiation. 'Downward' indicates a vector component ... |
radiation.flux.downward.shortwave | Point Forecast API | W/m^2, irradiance, or radiant flux density | The surface called 'surface' means the lower boundary of the atmosphere. 'shortwave' means shortwave radiation. 'Downward' indicates a vector componen... |
rainfal_01hracc | 1-Minute Observations API | mm | Precipitation thickness accumulated over 1 hour. |
rainfal_01hrmax | 1-Minute Observations API | mm | Maximum over 1 hour of precipitation thickness accumulated over 1 minute. |
rainfal_01mnacc | 1-Minute Observations API | mm | Precipitation thickness accumulated over 1 minute. |
rainfal_10mnacc | 1-Minute Observations API | mm | Precipitation thickness accumulated over 10 minutes. |
rainfal_10mnmax | 1-Minute Observations API | mm | Maximum over 10 minutes of precipitation thickness accumulated over 1 minute. |
relhumd_01hrmax | 1-Minute Observations API | percent | Relative humidity maximum over 1 hour. |
relhumd_01hrmin | 1-Minute Observations API | percent | Relative humidity minimum over 1 hour. |
relhumd_01mnavg | 1-Minute Observations API | percent | Relative humidity averaged over 1 minute. |
road_fz_01mnavg | 1-Minute Observations API | degC | Water freezing point on road surface averaged over 1 minute. |
road_t1_01mnavg | 1-Minute Observations API | degC | Air temperature at 5 cm above road averaged over 1 minute. |
road_t1_10mnavg | 1-Minute Observations API | degC | Air temperature at 5 cm above road averaged over 10 minutes. |
road_t2_01mnavg | 1-Minute Observations API | degC | Air temperature at 30 cm above road averaged over 1 minute. |
road_t2_10mnavg | 1-Minute Observations API | degC | Air temperature at 30 cm above road averaged over 10 minutes. |
road_t3_01mnavg | 1-Minute Observations API | degC | Sensor internal temperature ~2 cm averaged over 1 minute. |
road_t3_10mnavg | 1-Minute Observations API | degC | Sensor internal temperature ~2 cm averaged over 10 minutes. |
roadbki_01mnavg | 1-Minute Observations API | Hz | Road black Ice sensor frequency averaged over 1 minute. |
roadcdn_01mnavg | 1-Minute Observations API | (None) | Road condition - numeric (1 minute average). |
roadcvy_01mnavg | 1-Minute Observations API | (None) | Road electrical conductivity averaged over 1 minute. |
roadflm_01mnavg | 1-Minute Observations API | mm | Road water film height averaged over 1 minute. |
roadflm_10mnavg | 1-Minute Observations API | mm | Road water film height averaged over 10 minutes. |
roadfrt_01mnavg | 1-Minute Observations API | 0-1 | Road normalised friction/grip averaged 1 minute. |
roadlfp_01mnavg | 1-Minute Observations API | degC | Liquidus temperature on the surface of the road averaged over 1 minute. |
roadsal_01mnavg | 1-Minute Observations API | percent | Road salt concentration averaged over 1 minute. |
roadssg_01mnavg | 1-Minute Observations API | (None) | Road surface signal averaged over 1 minute. |
roadsst_01mnavg | 1-Minute Observations API | (None) | Road surface status averaged over 1 minute. |
roadtxt_01mnavg | 1-Minute Observations API | (None) | Road condition - text (1 minute average). |
sea.temperature.at-surface | Point Forecast API | K, Degrees Kelvin | Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any... |
sea.temperature.at-surface-anomaly | Point Forecast API | K, Degrees Kelvin | The term 'anomaly' means difference from climatology. Sea surface temperature is usually abbreviated as 'SST'. It is the temperature of sea water near... |
sfctemp_01hrmin | 1-Minute Observations API | degC | Surface temperature of grass or road surface minimum over 1 hour. |
sfctemp_01mnavg | 1-Minute Observations API | degC | Surface temperature of grass or road surface averaged over 1 hour. |
snowdep_01mnavg | 1-Minute Observations API | m | Snow depth at surface averaged over 1 minute. |
soilwet_01mnavg | 1-Minute Observations API | percent | Volumetric soil moisture content averaged over 1 minute. |
solradn_01hracc | 1-Minute Observations API | MJ.m^-2 | Solar irradiance intergrated over 1 hour. |
solradn_01mnacc | 1-Minute Observations API | MJ.m^-2 | Solar irradiance intergrated over 1 minute. |
solradn_01mnavg | 1-Minute Observations API | W.m^-2 | Solar irradiance averaged over 1 minute. |
solradn_10mnacc | 1-Minute Observations API | MJ.m^-2 | Solar irradiance integrated over 10 minutes. |
stn_magneticdev | 1-Minute Observations API | deg | Station magnetic deviation. Magnetic deviation (degrees East of True North). |
stn_rnwayabvmsl | 1-Minute Observations API | m | Runway height above mean sea level. |
surfaceWind | Aviation API | deg, Kn | An object detailing the wind conditions. Includes meanWindDirection, meanWindSpeed, and may include windGustSpeed, `extremeClockwiseWindDirectio... |
time | 1-Minute Observations API | ISO8601 timestamps | time. |
visibil_01mnavg | 1-Minute Observations API | km | Visibility in air averaged over 1 minute. |
visibil_10mnavg | 1-Minute Observations API | km | Visibility in air averaged over 10 minutes. |
wave.direction.above-8s.peak | Point Forecast API | °, degree | Spectral peak direction of the portion of a wave frequency spectrum where periods are above 8s. Direction from which the most energetic waves are comi... |
wave.direction.below-8s.peak | Point Forecast API | °, degree | Spectral peak direction of the portion of a wave frequency spectrum where periods are below 8s. Direction from which the most energetic waves are comi... |
wave.direction.mean | Point Forecast API | °, degree | Mean wave direction of where the waves are coming from |
wave.direction.peak | Point Forecast API | °, degree | Spectral peak direction of the total sea state. The direction from which the most energetic waves are coming. The spectral peak is the most energetic ... |
wave.directional-spread | Point Forecast API | °, degree | Directional spread is the (one-sided) directional width within a given sub-domain of the wave directional spectrum, S(t,x,y,f,theta) where t is time, ... |
wave.height | Point Forecast API | m, meter | Significant wave height, which is the average height of the highest one third of the waves for the location. The height is defined as the vertical dis... |
wave.height.above-8s | Point Forecast API | m, meter | Swell waves are waves on the ocean surface and are the low frequency portion of a bimodal wave frequency spectrum. Significant wave height is a statis... |
wave.height.below-8s | Point Forecast API | m, meter | Significant wave height of wind seas. It is computed from the portion of a wave frequency spectrum where periods are below 8s. Wind waves are waves on... |
wave.height.max | Point Forecast API | m, meter | Maximum wave height, which is the height of the largest single wave at the location. |
wave.period.above-8s.peak | Point Forecast API | s, second | Period of the most energetic waves within the swell wave component of a sea. Swell waves are waves on the ocean surface and are the low frequency port... |
wave.period.below-8s.peak | Point Forecast API | s, second | Period of the most energetic waves within the wind wave component of a sea. Wind waves are waves on the ocean surface and are the high frequency porti... |
wave.period.peak | Point Forecast API | s, second | A period is an interval of time, or the time-period of an oscillation. Also called peak wave period, is the period of the most energetic waves in the ... |
wave.period.tm01.mean | Point Forecast API | s, second | Tm01 is mean wave period using the zeroth- and first-order moments = m0/m1. Tm01 is less dependent on the high-frequency part of the spectrum, it is u... |
wave.period.tm02.mean | Point Forecast API | s, second | Tm02 is mean wave period using the zeroth- and second-order moments = sqrt(m0/m2). Tm02 gives the closest result to the mean period obtained with the ... |
wind.direction.at-100m | Point Forecast API | °, degree | The direction from which it is blowing at 100 meters above ground. North = 360, east = 90 and 0 means no wind / clam |
wind.direction.at-10m | Point Forecast API | °, degree | The direction from which it is blowing at 10 meters above ground. North = 360, east = 90 and 0 means no wind / clam |
wind.speed.at-100m | Point Forecast API | m/s, meters per second | Wind speed at 10m above ground level |
wind.speed.at-10m | Point Forecast API | m/s, meters per second | Wind speed at 10m above ground level |
wind.speed.eastward.at-100m | Point Forecast API | m/s, meters per second | Eastward wind speed vector component which is positive when directed eastward (negative westward). At 10 meters (or 100 meters) above ground level. |
wind.speed.eastward.at-10m | Point Forecast API | m/s, meters per second | Eastward wind speed vector component which is positive when directed eastward (negative westward). At 10 meters (or 100 meters) above ground level. |
wind.speed.gust.at-10m | Point Forecast API | m/s, meters per second | The speed of wind gusts. |
wind.speed.northward.at-100m | Point Forecast API | m/s, meters per second | Northward wind speed vector component which is positive when directed northward (negative southward). At 10 meters (or 100 meters) above ground level. |
wind.speed.northward.at-10m | Point Forecast API | m/s, meters per second | Northward wind speed vector component which is positive when directed northward (negative southward). At 10 meters (or 100 meters) above ground level. |
windccw_01hrmax | 1-Minute Observations API | deg | Maximum of wind direction counterclockwise deviation over 1 hour. |
windccw_01mnmax | 1-Minute Observations API | deg | Wind counterclockwise true direction (1 minute maximum). |
windccw_10mnmax | 1-Minute Observations API | deg | Maximum of wind direction counterclockwise deviation over 10 minutes. |
windccw_1mnmax | 1-Minute Observations API | deg | Maximum of wind direction counterclockwise deviation over 1 minute. |
windcw__01hrmax | 1-Minute Observations API | deg | Maximum of wind direction clockwise deviation over 1 hour. |
windcw__01mnmax | 1-Minute Observations API | deg | Maximum of wind direction clockwise deviation over 1 minute. |
windcw__10mnmax | 1-Minute Observations API | deg | Maximum of wind direction clockwise deviation over 10 minutes. |
winddir_01hravg | 1-Minute Observations API | deg | Wind from direction averaged over 1 hour. |
winddir_01mnavg | 1-Minute Observations API | deg | Wind from direction averaged over 1 minute. |
winddir_10mnavg | 1-Minute Observations API | deg | Wind from direction averaged over 10 minutes. |
windgst_01hrdir | 1-Minute Observations API | deg | Wind from direction at wind speed of gust maximum over 1 hour. |
windgst_01hrmax | 1-Minute Observations API | knot | Maximum wind gust speed over 1 hour. |
windgst_01hrtim | 1-Minute Observations API | utc | Maximum wind gust time over 1 hour. |
windgst_01mnmax | 1-Minute Observations API | knot | Wind gust speed maximum over 1 minute. |
windgst_10mnmax | 1-Minute Observations API | knot | Wind gust speed maximum over 10 minutes. |
windlul_01mnmin | 1-Minute Observations API | knot | Wind lull speed minimum over 1 minute. |
windlul_10mnmin | 1-Minute Observations API | knot | Wind lull speed minimum over 10 minutes. |
windrun_01hracc | 1-Minute Observations API | m | Wind run accumulated over 1 hour. |
windspd_01hravg | 1-Minute Observations API | knot | Wind speed averaged over 1 hour. |
windspd_01mnavg | 1-Minute Observations API | knot | Wind speed averaged over 1 minute. |
windspd_10mnavg | 1-Minute Observations API | knot | Wind speed averaged over 10 minutes. |
wndccwm_01hrmax | 1-Minute Observations API | deg | Maximum wind counterclockwise magnetic direction deviation over 1 hour. |
wndccwm_01mnmax | 1-Minute Observations API | deg | Maximum wind counterclockwise magnetic direction deviation over 1 minute. |
wndccwm_10mnmax | 1-Minute Observations API | deg | Maximum wind counterclockwise magnetic direction deviation over 10 minutes. |
wndcwm__01hrmax | 1-Minute Observations API | deg | Maximum wind clockwise magnetic direction deviation over 1 hour. |
wndcwm__01mnmax | 1-Minute Observations API | deg | Maximum wind clockwise magnetic direction deviation over 1 minute. |
wndcwm__10mnmax | 1-Minute Observations API | deg | Maximum wind clockwise magnetic direction deviation over 10 minutes. |
wnddirm_01hravg | 1-Minute Observations API | deg | Magnetic direction of wind averaged over 1 hour. |
wnddirm_01mnavg | 1-Minute Observations API | deg | Magnetic direction of wind averaged over 1 minute. |
wnddirm_10mnavg | 1-Minute Observations API | deg | Magnetic direction of wind averaged over 10 minutes. |
wndgstm_01hrdir | 1-Minute Observations API | deg | Magnetic direction of wind at time of maximum wind gust speed over 1 hour period. |
wv10pht_xxmnavg | 1-Minute Observations API | m | Mean of top 10% wave heigh from zero crossing analysis. |
wvmaxht_xxmnmax | 1-Minute Observations API | m | Maximum wave height of wind and swell waves. |
wvpk1ht_xxmnavg | 1-Minute Observations API | m | Sea surface wave height from the highest peak in the 1D energy spectrum. |
wvpk1pd_xxmnavg | 1-Minute Observations API | second | Sea surface wave period at highest peak of 1D spectrum. |
wvpk2ht_xxmnavg | 1-Minute Observations API | m | Sea surface wave height from the second highest peak in the 1D energy spectrum. |
wvpk2pd_xxmnavg | 1-Minute Observations API | second | Sea surface wave period at 2nd highest peak of 1D spectrum. |
wvsight_xxmnavg | 1-Minute Observations API | m | Sea surface significant wave height from the full spectrum. |
wvsigpd_xxmnavg | 1-Minute Observations API | second | Sea surface significant wave period from the full spectrum. |
wvspect_xxmnavg | 1-Minute Observations API | minute | Duration of the water height record used for the spectral analysis. |
wvsplvl_xxmnavg | 1-Minute Observations API | m | Mean water height with respect to datum from record used in wave spectral analysis. |
wvspwid_xxmnper | 1-Minute Observations API | ratio | Spectral width. Spectral width: 0. |
wvtradn_xxmnper | 1-Minute Observations API | minute | Duration of the water height record used for the zero crossing analysis. |
wvtrlvl_xxmnavg | 1-Minute Observations API | m | Mean water height with respect to datum from record used in wave zero crossing analysis. |
wvzrxpd_xxmnavg | 1-Minute Observations API | second | Zero crossing mean wave period. |