Temperature:
Unit: degrees Celsius (ºC) or degrees Fahrenheit (ºF).
Instrument: Thermometer
Humidity
The amount of water vapour in the air.
Unit: percentage (%). Instrument: hygrometer
Precipitation
water that falls from the clouds
Unit: mm
Instrument: rain gauge
Wind
the movement of air in the atmosphere
Unit: Km/h
Instrument: anemometer
Atmosphere pressure
the weight of the air in the atmosphere
Unit: (hPa)
Instrument: barometer