hourly#

metadata#

property

value

name

hourly

original name

hourly

url

here

datasets#

data#

metadata#

property

value

name

data

original name

data

description

Historical hourly weather data from the Global Historical Climatology Network (GHCN) (details)

access

here

parameters#

name

original name

description

unit type

unit

constraints

humidity

relative_humidity

Relative humidity is calculated from air (dry bulb) temperature and dewpoint temperature (whole percent)

fraction

%

>=0,<=100

precipitation_height

precipitation

total liquid precipitation (rain or melted snow) for past hour; a “T” in the measurement code column indicates a trace amount of precipitation (millimeters)

precipitation

mm

>=0

precipitation_height_last_3h

precipitation_3_hour

3-hour total liquid precipitation (rain or melted snow) accumulation from FM12/SYNOP reports; a “T” in the measurement code column indicates a trace amount of precipitation (millimeters)

precipitation

mm

>=0

precipitation_height_last_6h

precipitation_6_hour

6-hour total liquid precipitation (rain or melted snow) accumulation from FM12/SYNOP reports; a “T” in the measurement code column indicates a trace amount of precipitation (millimeters)

precipitation

mm

>=0

precipitation_height_last_9h

precipitation_9_hour

9-hour total liquid precipitation (rain or melted snow) accumulation from FM12/SYNOP reports; a “T” in the measurement code column indicates a trace amount of precipitation (millimeters)

precipitation

mm

>=0

precipitation_height_last_12h

precipitation_12_hour

12-hour total liquid precipitation (rain or melted snow) accumulation from FM12/SYNOP reports; a “T” in the measurement code column indicates a trace amount of precipitation (millimeters)

precipitation

mm

>=0

precipitation_height_last_15h

precipitation_15_hour

15-hour total liquid precipitation (rain or melted snow) accumulation from FM12/SYNOP reports; a “T” in the measurement code column indicates a trace amount of precipitation (millimeters)

precipitation

mm

>=0

precipitation_height_last_18h

precipitation_18_hour

18-hour total liquid precipitation (rain or melted snow) accumulation from FM12/SYNOP reports; a “T” in the measurement code column indicates a trace amount of precipitation (millimeters)

precipitation

mm

>=0

precipitation_height_last_21h

precipitation_21_hour

21-hour total liquid precipitation (rain or melted snow) accumulation from FM12/SYNOP reports; a “T” in the measurement code column indicates a trace amount of precipitation (millimeters)

precipitation

mm

>=0

precipitation_height_last_24h

precipitation_24_hour

24-hour total liquid precipitation (rain or melted snow) accumulation from FM12/SYNOP reports; a “T” in the measurement code column indicates a trace amount of precipitation (millimeters)

precipitation

mm

>=0

pressure_air_sea_level

sea_level_pressure

Sea level pressure (hectopascals)

pressure

hPa

>=0

pressure_air_site

station_level_pressure

Station pressure (hectopascals)

pressure

hPa

>=0

pressure_air_site_delta_last_3h

pressure_3hr_change

3-hour pressure change (hectopascals)

pressure

hPa

>=0

pressure_air_site_reduced

altimeter

Reduced pressure (hectopascals)

pressure

hPa

>=0

snow_depth

snow_depth

depth of snowpack on the ground (centimeters/m)

length_short

cm

>=0

temperature_air_mean_2m

temperature

2 meter (circa) Above Ground Level Air (dry bulb) Temperature (⁰C to tenths)

temperature

°C

-

temperature_dew_point_mean_2m

dew_point_temperature

Dew Point Temperature (⁰C to tenths)

temperature

°C

-

temperature_wet_mean_2m

wet_bulb_temperature

Wet bulb temperature (⁰C to tenths)

temperature

°C

-

visibility_range

visibility

horizontal distance at which an object can be seen and identified (kilometers)

length_medium

km

>=0

wind_direction

wind_direction

Wind direction from true north using compass directions (e.g. 360=true north, 180=south, 270=west, etc.). Note: A direction of “000” is given for calm winds. (whole degrees)

angle

°

>=0,<=360

wind_gust_max

wind_gust

Peak short duration (usually < 20 seconds) wind speed (meters per second) that exceeds the wind_speed average

speed

m/s

>=0

wind_speed

wind_speed

Wind speed (meters per second)

speed

m/s

>=0