RainUnit:
  type: string
  enum: [in, mm]

WindUnit:
  type: string
  enum: [km/h, mph, ft/s, knots, Bft, m/s]

PressureUnit:
  type: string
  enum: [hPa, inHg, mmHg, mb]

SolarRadiationUnit:
  type: string
  enum: [W/m²]

TemperatureUnit:
  type: string
  enum: [°C, °F]