Hourly meteorological data.

Format

A data frame with columns

origin

Weather station. Named origin to facilitate merging with flights data.

year, month, day, hour

Time of recording, UTC.

temp, dewp

Temperature and dewpoint in F.

humid

Relative humidity.

wind_dir, wind_speed, wind_gust

Wind direction (in degrees), speed and gust speed (in mph).

precip

Precipitation, in inches.

pressure

Sea level pressure in millibars.

visib

Visibility in miles.

time_hour

Date and hour of the recording as a POSIXct date, UTC.

Source

ASOS download from Iowa Environmental Mesonet, https://mesonet.agron.iastate.edu/request/download.phtml.