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	constraints
humidity	relative_humidity	Relative humidity is calculated from air (dry bulb) temperature and dewpoint temperature (whole percent)	%	>=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)	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)	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)	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)	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)	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)	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)	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)	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)	mm	>=0
pressure_air_sea_level	sea_level_pressure	Sea level pressure (hectopascals)	hPa	>=0
pressure_air_site	station_level_pressure	Station pressure (hectopascals)	hPa	>=0
pressure_air_site_delta_last_3h	pressure_3hr_change	3-hour pressure change (hectopascals)	hPa	>=0
pressure_air_site_reduced	altimeter	Reduced pressure (hectopascals)	hPa	>=0
snow_depth	snow_depth	depth of snowpack on the ground (centimeters/m)	cm	>=0
temperature_air_mean_2m	temperature	2 meter (circa) Above Ground Level Air (dry bulb) Temperature (⁰C to tenths)	°C	-
temperature_dew_point_mean_2m	dew_point_temperature	Dew Point Temperature (⁰C to tenths)	°C	-
temperature_wet_mean_2m	wet_bulb_temperature	Wet bulb temperature (⁰C to tenths)	°C	-
visibility_range	visibility	horizontal distance at which an object can be seen and identified (kilometers)	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)	°	>=0,<=360
wind_gust_max	wind_gust	Peak short duration (usually < 20 seconds) wind speed (meters per second) that exceeds the wind_speed average	m/s	>=0
wind_speed	wind_speed	Wind speed (meters per second)	m/s	>=0