1. Go to Preferences
2. Scroll down to "Weather" and click to open.
3. Tap on "Temperature scale" to adjust it to Celsius or Fahrenheit.
4. Tap on "Precipitation unit" to adjust it to Millimetres and Inches.
5. Tap on "Wind speed unit" to adjust it to Miles per hour, Kilometres per hour, Knots, Beaufort scale and Metres per second.
6. Tap on "Pressure unit" to adjust it to Millibars, Inches of mercury, Millimetres of mercury, Pounds per square inch, KiloPascals and HectoPascals.