The Weather API includes a unitGroup parameter that allows you to specify the units that will be used when returning weather data. This article describes the units within each group. The API uses four group ids to indicate the units that will be used – us, metric, uk and base.
us – United States
Weather Variable
Measurement Unit
Temperature, Heat Index & Wind Chill
Degrees Fahrenheit
Precipitation
Inches
Snow
Inches
Wind & Wind Gust
Miles Per Hour
Visibility
Miles
Pressure
Millibars
Solar Radiation
W/m2
Solar Energy
MJ/m2
metric – Metric
Weather Variable
Measurement Unit
Temperature, Heat Index & Wind Chill
Degrees Celcius
Precipitation
Millimeters
Snow
Centimeters
Wind & Wind Gust
Kilometers Per Hour
Visibility
Kilometers
Pressure
Millibars (Hectopascals)
Solar Radiation
W/m2
Solar Energy
MJ/m2
uk – United Kingdom
Weather Variable
Measurement Unit
Temperature, Heat Index & Wind Chill
Degrees Celcius
Precipitation
Millimeters
Snow
Centimeters
Wind & Wind Gust
Miles Per Hour
Visibility
Miles
Pressure
Millibars
Solar Radiation
W/m2
Solar Energy
MJ/m2
base – Base or scientific units
Weather Variable
Measurement Unit
Temperature, Heat Index & Wind Chill
Kelvin
Precipitation
Millimeters
Snow
Centimeters
Wind & Wind Gust
Meters Per Second
Visibility
Kilometers
Pressure
Millibars
Solar Radiation
W/m2
Solar Energy
MJ/m2
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